What is <crystal system> of <amorphous solid> ?
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Which is the crystal system of an amorphous solid?
SELECT DISTINCT ?a WHERE { ?a property:crystal_system resource:amorphous_solid }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject>  ?answer. ?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> <http://wikidata.dbpedia.org/resource/Q103382>. }
select distinct ?answer where { ?answer wdt:P556 wd:Q103382}
opal evansite diadochite allophane delvauxite lechatelierite santabarbaraite bolivarite belyankinite cadwaladerite georgeite gerasimovskite jordisite karnasurtite-(Ce) manganbelyankinite metastibnite meymacite neotocite pitticite rosièresite thorosteenstrupine umbozerite siderogel