What is <crystal system> of <forsterite> ?
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Explain the forsterite of the crystal system.
SELECT DISTINCT ?x WHERE { resource:forsterite property:crystal_system ?x }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q415037> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P556> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer. }
select distinct ?answer where { wd:Q415037 wdt:P556 ?answer}
orthorhombic crystal system