Welcome to SWI-Prolog (Multi-threaded, 64 bits, Version 7.2.3)
Copyright (c) 1990-2015 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).
            1953  1954  1955  1956  1957
Dana        1.26  1.29  1.00  0.79  0.67
Jackie      1.14  1.13  1.11  0.94  0.72
Kelly       3.73  2.10  2.32  1.77  0.98
Kim         1.47  1.08  0.61  0.30  0.17
Kris        1.22  1.09  0.92  0.88  0.85
Pat         1.23  1.07  0.92  0.97  0.78
Rene        1.15  1.24  1.13  0.88  0.87
Tracy       1.02  0.73  0.56  0.55  0.59
true.
% halt