UGC-NET | UGC NET CS 2015 Dec – III | Question 7

Given the following set of prolog clauses :
father(X, Y) :
parent(X, Y),
male(X),
parent(Sally, Bob),
parent(Jim, Bob),
parent(Alice, Jane),
parent(Thomas, Jane),
male(Bob),
male(Jim),
female(Salley),
female(Alice).
How many atoms are matched to the variable ‘X’ before the query
father(X, Jane) reports a Result ?

(A) 1
(B) 2
(C) 3
(D) No option is correct.


Answer: (D)

Explanation:

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