Answer
See the explanation
Work Step by Step
Here's an extended Prolog program that includes the additional family relationships of uncle, aunt, grandparent, and cousin, along with a rule for defining parents:
```prolog
% Facts
parent(john, jim).
parent(john, ann).
parent(mary, jim).
parent(mary, ann).
parent(jim, bob).
parent(jim, lisa).
parent(ann, tom).
parent(ann, sara).
% Rules for uncle, aunt, grandparent, and cousin
uncle(X, Y) :-
parent(Z, Y),
brother(X, Z).
aunt(X, Y) :-
parent(Z, Y),
sister(X, Z).
grandparent(X, Y) :-
parent(X, Z),
parent(Z, Y).
cousin(X, Y) :-
parent(Z, X),
parent(W, Y),
sibling(Z, W).
% Rule for parents
parents(X, Y, Z) :-
parent(X, Z),
parent(Y, Z).
% Helper rules for sibling, brother, and sister
sibling(X, Y) :-
parent(Z, X),
parent(Z, Y),
X \= Y.
brother(X, Y) :-
male(X),
sibling(X, Y).
sister(X, Y) :-
female(X),
sibling(X, Y).
% Define male and female (replace with actual facts in your program)
male(john).
male(jim).
male(bob).
male(tom).
female(ann).
female(mary).
female(lisa).
female(sara).
```
This Prolog program includes rules for uncle, aunt, grandparent, and cousin relationships, as well as a rule for defining parents. The program assumes the existence of facts for male and female individuals, and you can replace those facts with your actual data.
