What about probability of finding a criminal?

We don't know who is a liar

We have two chance to find criminal.

A = D is criminal

B = E is not a criminal

C = D is not a lier

D = i am not criminal

E = C is good men

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three chance to find criminal.

A = G is lier

B = D is not criminal

C = E is not criminal

D = C is criminal

E = A is not criminal

F = B is lier

G = F is criminal