AI1 TUTORIAL AND PRACTICAL EXERCISE    27 th November 1984
Helen Pain



  LOG ON AND RUN AI1PROLOG OR P

  CONSULT THE FILE ECMI04.VISITING

     ?- ['ecmi04.visiting"].

  GET A LISTING OF IT

      ?- listing.

  READ THE LISTING AND WORK OUT WHAT THE FILE DOES.

  WRITE QUESTIONS TO GET THE ANSWERS TO THE FOLLOWING;

  1. the phone number at place_a

  2. ritchie's phone number

  3. what place has phone number 229-6031
     and who has that number

  4. who is visiting the aidept

  5. who is thatcher visiting

  6. where is bundy

  7. where is thatcher

  8. where is the aidept

  9. where is reagan

  10. what number is the number to ring for ross

  11. what number is the number to ring for johnson

  12. what number is the number to ring for castro

  13. what number is the number to ring for reagan


TRACE THE PROGRAM AND ASK SOME OF THE SAME QUESTIONS AGAIN

  eg ?- trace,ring(reagan,N).