computer science - How to list more than 1 output on prolog query?

Question

Imagine my siblings, my cousins and me and our total count is 10. So i write this code and when i run it, it just give me 1 output. How can i print all the X values(names) on this query. And if possible how can i change what name comes first or how can i choose as a like what 3rd or 5th name would be ? (My granduncle is my grandfather's brother.)

Here is my code and output

granduncle(T,X) :- brother(T,Z),parent(Z,Y),parent(Y,X).


?- granduncle(john,X).
X=stan

Answer 1

等待大神解答