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Text File  |  1989-04-14  |  197 b   |  10 lines
  1.  
  2. /* Copyright (C) 1988, 1989 Herve' Touati, Aquarius Project, UC Berkeley */
  3.  
  4. main :- X = a(Y,Z), Y = 3, call(X).
  5.  
  6. a(1,2) :- write(wrong), nl.
  7. a(1,3) :- write(wrong), nl.
  8. a(3,4) :- write(ok), nl.
  9.  
  10.