What is {density} of {aluminium} that is {temperature} is {20.0} ?
The density of aluminium becomes what at a temperature of 20 degrees?
What is the density of aluminium at a temperature of 20 degrees?
SELECT ?r WHERE { ?a property:density ?r . resource:aluminium property:density ?a . ?a property:temperature ?e . FILTER ( ?e = 20.0 ) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q663> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2054> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P2076> <20.0>
} 

SELECT ?obj WHERE { wd:Q663 p:P2054 ?s . ?s ps:P2054 ?obj . ?s pq:P2076 ?x filter(contains(?x , '20.0')) }