================================================================ Logtalk - Open source object-oriented logic programming language Release 2.30.2 Copyright (c) 1998-2007 Paulo Moura. All Rights Reserved. ================================================================ % start by loading the example: | ?- logtalk_load(lo_planner(loader)). ... % plan a trip from london to the aiai conference in edinburgh: | ?- plan(london)::from(imperial, aiai, L). L = [[taxi(imperial,lhr)]-[fly(lhr,edin)]-[taxi(edin,aiai)]] ? yes