What is {density} of {hydrogen peroxide} that is {temperature} is {20.0} ?
What is hydrogen peroxide's density at twenty degrees?
What is the density of hydrogen peroxide at a temperature of 20.0?
SELECT ?d WHERE { FILTER ( CONTAINS ( ?l , '20.0' ) ) . resource:hydrogen_peroxide property:density ?u . ?u property:density ?d . ?u property:temperature ?l }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q171877> .
?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:Q171877 p:P2054 ?s . ?s ps:P2054 ?obj . ?s pq:P2076 ?x filter(contains(?x , '20.0')) }