I read somewhere that it uses the cmu pronouncing dictionary which would give it both the meter and rhyme it needs (http://www.speech.cs.cmu.edu/cgi-bin/cmudict

I read somewhere that it uses the cmu pronouncing dictionary which would give it both the meter and rhyme it needs (http://www.speech.cs.cmu.edu/cgi-bin/cmudict http://www.speech.cs.cmu.edu/cgi-bin/cmudict)