A very simple sentence generator
Here is a tiny lexicon and mini grammar with only one rule which defines a sentence as consisting of five words: an article, a noun, a verb, and again an article and a noun.
word(article,a). word(article,every). word(noun,criminal). word(noun,'big kahuna burger'). word(verb,eats). word(verb,likes). sentence(Word1,Word2,Word3,Word4,Word5) :- word(article,Word1), word(noun,Word2), word(verb,Word3), word(article,Word4), word(noun,Word5).Download knowledge base here.
What query do you have to pose in order to find out which
sentences the grammar can generate? In which order will Prolog
generate the sentences? Make a prediction about the order, then
try it out. If it is not clear for you why Prolog generates the
sentence in the order that you are seeing, do a trace.