% GENERAL INFORMATION
% File:  colors.pro
% Line:  Knowledge base containing color facts.

% DATA DICTIONARY
% primary(C) :: C is a primary color
% secondary(C) :: C is a secondary color
% other(C) :: C is an nonprimary/nonsecondary color
% mix(P1,P2,S) :: P1 and P2 can be mixed to make S

% THE KNOWLEDGE BASE ...

primary(red).
primary(blue).
primary(yellow).

secondary(orange).
secondary(purple).
secondary(green).

other(aqua).
other(mauve).

mix(blue,red,purple).
mix(red,yellow,orange).
mix(blue,yellow,green).

% END OF KNOWLEDGE BASE