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Encoding:
Prolog Source  |  1990-03-26  |  283 b   |  15 lines
  1. /*
  2.    Copyright (c) 1986, 90 by Prolog Development Center
  3. */
  4.  
  5. predicates
  6.    likes(symbol,symbol)
  7.  
  8. clauses
  9.    likes(ellen, reading).
  10.    likes(john, computers).
  11.    likes(john, badminton).
  12.    likes(leonard, badminton). 
  13.    likes(eric, swimming).
  14.    likes(eric, reading).
  15.