Complex sentence: The creators of Faerieworlds held an event on the east coast called FaerieCon International, which took place on October 12-14,2007 in Philadelphia at the Pennsylvania Convention Center.
Split into simpler sentences: The creators of Faerieworlds are now producing an event on the east coast called FaerieCon International. The event will take place on October 12-14,2007 in Philadelphia at the Pennsylvania Convention Center.