What is the {written work} for {series} of {His Dark Materials trilogy}
Which books are within the His Dull Materials set of three?
Which books are in the His Dark Materials trilogy?
SELECT DISTINCT ?l WHERE { ?l rdf:type ontology:written_work . ?l property:part_of_the_series resource:His_Dark_Materials_trilogy }
select distinct ?subj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?subj . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P179> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q129240> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q47461344> } 
 select distinct ?sbj where { ?sbj wdt:P179 wd:Q129240 . ?sbj wdt:P31 wd:Q47461344 } 