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  1. mother_child(trude, sally).
  2.  
  3. father_child(tom, sally).
  4. father_child(tom, erica).
  5. father_child(mike, tom).
  6.  
  7. sibling(X, Y)      :- parent_child(Z, X), parent_child(Z, Y).
  8.  
  9. parent_child(X, Y) :- father_child(X, Y).
  10. parent_child(X, Y) :- mother_child(X, Y).
Success #stdin #stdout 0.02s 6204KB
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https://ideone.com/1ZeHB
language:
Prolog (swi 7.6.4)
created:
14 years ago
visibility:
public

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