factor

Author	SHA1	Message	Date
Doug Coleman	3652a454d8	rewrite singletons to be predicate classes instead of tuples	2008-03-07 20:02:58 -06:00
Doug Coleman	ca6fc5edc6	default constructor was not sticking around after USEing a vocab	2008-03-06 10:18:46 -06:00
Doug Coleman	6fe9e6f1ce	add singleton classes	2008-03-05 21:35:08 -06:00