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- $ ./a.out
- Welcome to SWI-Prolog (Multi-threaded, 32 bits, Version 5.10.4)
- Copyright (c) 1990-2011 University of Amsterdam, VU Amsterdam
- SWI-Prolog comes with ABSOLUTELY NO WARRANTY. This is free
- software, and you are welcome to redistribute it under certain
- conditions. Please visit http://www.swi-prolog.org for details.
- For help, use ?- help(Topic). or ?- apropos(Word).
- ?- human(socrates).
- true.
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