List of e1 where:

Entity1 = <http://dbpedia.org/resource/Beyond_This_Horizon> . Drop
Entity1 = <http://dbpedia.org/resource/Language_identification> . Drop
Entity1 = <http://dbpedia.org/resource/Postsingular> . Drop
Entity1 = <http://dbpedia.org/resource/A_Crown_of_Swords> . Drop
Entity1 = <http://dbpedia.org/resource/The_Face_of_the_Clam> . Drop
Entity1 = <http://dbpedia.org/resource/Anne_of_Green_Gables> . Drop
Entity1 = <http://dbpedia.org/resource/Divergent_(novel)> . Drop
Entity1 = <http://dbpedia.org/resource/The_Looking_Glass_Wars> . Drop