diff --git a/medical_adviser.pl b/medical_adviser.pl
index fe35b34..028f5f1 100644
--- a/medical_adviser.pl
+++ b/medical_adviser.pl
@@ -1,25 +1,190 @@
+% Ten program ekspercki ma za zadanie pomoc ustalic jakie choroby moga dolegac pacjentowi.
+% Choroby posiadaja objawy obowiazkowe i objawy nieobowiazkowe.
+% Program jest w stanie rozpoznawac choroby w dwoch stopniach pewnosci.
+% Jesli pacjent ma wszystkie obowiazkowe objawy dla choroby (wyzszy stopien pewnosci) sa to 
+% program wypisze:
+% "The patients disease is almost certainly NAZWA_CHOROBY.".
+% Jesli pacjent ma przynajmniej jeden (lecz nie wszystkie obowiazkowe) objaw z danej 
+% choroby (nizszy stopien pewnosci) to zostanie ona tak wypisana:
+% "The patients disease might be NAZWA_CHOROBY.".
+% Program moze listowac wiele chorob naraz jesli podane objawy pasuja do wiecej niz jednej 
+% choroby.
+% Choroby dla ktorych nie pasuje (nie istnieje w obowiazkowych ani opcjonalnych objawach) 
+% przynajmniej jeden z podanych przez uzytkownika objawow nie zostana wylistowane.
+
+% Glowna procedura jest: diagnose(Sentences, Answer).
+% Jesli wiecej niz jedna choroba pasuje do podanych objawow to mozna podgladac kolejne
+% wciskajac klawisz ";".
+
+% Zdania jakie mozna tworzyc to:
+% Patient has OBJAW1, OBJAW2, etc. (np. runny nose, spleen enlargment)
+% Patients MIEJSCE_BOLU1, MIEJSCE_BOLU2, etc hurts. [hurts, nie hurt!] (np. throat, head)
+% Patient OBJAW1, OBJAW2, etc. (np. coughs, faints)
+% Patients temperature is CZ_CALKOWITA,CZ_DZIESIETNA. (np. 36,6) [przecinek obowiazkowo miedzy czesc calkowita i dziesietna!]
+% Patients erythrocyte level is CZ_CALKOWITA,CZ_DZIESIETNA. (np. 5,5) [przecinek obowiazkowo miedzy czesc calkowita i dziesietna!]
+% Wszystkie zdania koncza sie kropka. Mozna zapisac wiele zdan na raz w taki sposob:
+% diagnose("Zdanie1 Zdanie2 Zdanie3", Answer).
+% np:
+% diagnose( "Patient has general weakness, chills. Patients throat hurts. Patients temperature is 39,0. Patients erythrocyte level is 5,0.", Answer).
+
+% Istnieja trzy poziomy goraczki - (-INF ; 37,0]: 0, (37,0 ; 38,0]: 1, (38,0 ; INF): 2.
+% Poziom erytrocytow we krwii rowniez jest pogrupowany w poziomy -
+% (-INF ; 4,2]: 0, (4,2 ; 5,4]: 1, (5,4 ; INF): 2.
+
+% Choroby wraz z nazwa, objawami obowiazkowymi (pierwsza lista) i opcjonalnymi (druga lista) sa ponizej.
+
 % | ======================= |
 % | == disease data base == |
 % | ======================= |
 
-disease("flu",[("pain",["throat"]),("runny nose"),("fever",-1),("general weakness"),("coughs")],[("pain",["muscles"]),("erythrocyte",-1),("erythrocyte",0),("erythrocyte",1)]).
-disease("malaria",[("fever",2),("general weakness")],[("pain",["head"]),("chills"),("erythrocyte",-1)]).
-disease("angina",[("fever",2),("coughs"),("general weakness"),("magnifying lymph nodes"),("pain",["throat"])],[("cannot swallow"),("pain",["head"]),("chills"),("erythrocyte",-1),("erythrocyte",0),("erythrocyte",1)]).
-disease("diphtheria",[("fever",1),("general weakness"),("dyspnea")],[("Unclear Speech"),("cannot swallow"),("erythrocyte",-1),("erythrocyte",0),("erythrocyte",1)]).
-disease("typhoid",[("fever",0),("pain",["stomach"]),("spleen enlargement")],["tire symptoms",("erythrocyte",-1),("erythrocyte",0),("erythrocyte",1)]).
-disease("plague",[("fever",2),("general weakness"),("magnifying lymph nodes"),("liver enlargement"),("spleen enlargement")],[("cloded rash"),("erythrocyte",-1),("erythrocyte",0),("erythrocyte",1)]).
-disease("haemophilia",[("epistaxis"),("impaired blood clotting"),("spleen enlargement")],[("fever",0),("fever",1),("fever",2),("erythrocyte",-1),("erythrocyte",0),("erythrocyte",1)]).
-disease("whooping cough",[("fever",1),("pain",["throat"]),("paroxysmal cough")],[("conjunctivitis"),("vomits"),("erythrocyte",-1),("erythrocyte",0),("erythrocyte",1)]).
-disease("myasthenia",[("excessive fatigue")],[("muscle weakness"),("double vision"),("fever",0),("fever",1),("fever",2),("erythrocyte",-1),("erythrocyte",0),("erythrocyte",1)]).
-disease("atrial fibrillation",[("dizziness"),("faints"),("excessive fatigue")],[("coughs"),("fever",0),("fever",1),("fever",2),("erythrocyte",-1),("erythrocyte",0),("erythrocyte",1)]).
+disease(
+    "flu",
+    [
+        ("pain",["throat"]),
+        ("runny nose"),
+        ("general weakness"),
+        ("coughs")
+    ],
+    [
+        ("pain",["muscles"]),
+        ("fever",0), ("fever",1), ("fever",2),
+        ("erythrocyte",-1), ("erythrocyte",0), ("erythrocyte",1)
+    ]
+).
+
+disease(
+    "malaria",
+    [
+        ("fever",2),
+        ("general weakness")
+    ],
+    [
+        ("pain",["head"]),
+        ("chills"),
+        ("erythrocyte",-1)
+    ]
+).
+
+disease(
+    "angina",
+    [
+        ("fever",2),
+        ("coughs"),
+        ("general weakness"),
+        ("magnifying lymph nodes"),
+        ("pain",["throat"])
+    ],
+    [
+        ("cannot swallow"),
+        ("pain",["head"]),
+        ("chills"),
+        ("erythrocyte",-1), ("erythrocyte",0), ("erythrocyte",1)
+    ]
+).
+
+disease(
+    "diphtheria",
+    [
+        ("fever",1),
+        ("general weakness"),
+        ("dyspnea")
+    ],
+    [
+        ("unclear speech"),
+        ("cannot swallow"),
+        ("erythrocyte",-1), ("erythrocyte",0), ("erythrocyte",1)
+    ]
+).
+
+disease(
+    "typhoid",
+    [
+        ("fever",0),
+        ("pain",["stomach"]),
+        ("spleen enlargement")
+    ],
+    [
+        "tire symptoms",
+        ("erythrocyte",-1), ("erythrocyte",0), ("erythrocyte",1)
+    ]
+).
+
+disease(
+    "plague",
+    [
+        ("fever",2),
+        ("general weakness"),
+        ("magnifying lymph nodes"),
+        ("liver enlargement"),
+        ("spleen enlargement")
+    ],
+    [
+        ("cloded rash"),
+        ("erythrocyte",-1), ("erythrocyte",0), ("erythrocyte",1)
+    ]
+).
+
+disease(
+    "haemophilia",
+    [
+        ("epistaxis"),
+        ("impaired blood clotting"),
+        ("spleen enlargement")
+    ],
+    [
+        ("fever",0), ("fever",1), ("fever",2),
+        ("erythrocyte",-1), ("erythrocyte",0), ("erythrocyte",1)
+    ]
+).
+
+disease(
+    "whooping cough",
+    [
+        ("fever",1),
+        ("pain",["throat"]),
+        ("paroxysmal cough")
+    ],
+    [
+        ("conjunctivitis"),
+        ("vomits"),
+        ("erythrocyte",-1), ("erythrocyte",0), ("erythrocyte",1)
+    ]
+).
+
+disease(
+    "myasthenia",
+    [
+        ("excessive fatigue")
+    ],
+    [
+        ("muscle weakness"),
+        ("double vision"),
+        ("fever",0), ("fever",1), ("fever",2),
+        ("erythrocyte",-1), ("erythrocyte",0), ("erythrocyte",1)
+    ]
+).
+
+disease(
+    "atrial fibrillation",
+    [
+        ("dizziness"),
+        ("faints"),
+        ("excessive fatigue")
+    ],
+    [
+        ("coughs"),
+        ("fever",0), ("fever",1), ("fever",2),
+        ("erythrocyte",-1), ("erythrocyte",0), ("erythrocyte",1)
+    ]
+).
 
 
 % | ===================== |
 % | == main procedures == |
 % | ===================== |
 
-diagnose(Sentence, Answer) :- 
-    interpret(Sentence, Symptoms),
+diagnose(Sentences, Answer) :- 
+    interpret(Sentences, Symptoms),
     suggest(Symptoms, Answer).