% Medical Diagnostic System
diagnose(fever, cough, flu).
diagnose(cough, sneezing, common_cold).
diagnose(fever, chills, malaria).
diagnose(vomiting, diarrhea, food_poisoning).
go :-
write('Enter first symptom: '), write('Enter second symptom: '), diagnose(S1, S2, Disease),
write('Possible disease: '), nl.
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