Consider the following prolog logic program: mother (mary, sue). father (john, sue). mother (mary, bill). father (john, bill). mother (sue, nancy). father (bob, nancy). mother (sue, jeff). father...

Extracted text: Consider the following prolog logic program: mother (mary, sue). father (john, sue). mother (mary, bill). father (john, bill). mother (sue, nancy). father (bob, nancy). mother (sue, jeff). father (bob, jeff). mother (jane, ron). Father(bill,ron). Parent(A,B) :- father(A,B). Parent (A,B) :- mother(A,B). Grandparent(C,D) :- parent(C,E), parent(E,D). Add a sibling relationship to the above program and answer the following question: ?- sibling(sue, X).