what is the {of} for {Windows XP} has {platform} as {x86-64} ?
What is the platform for Windows XP x86-64?
Give me the platform for Windows XP x86-64?
SELECT ?i WHERE { ?u property:platform resource:x86_64 . ?u property:of ?i . resource:Windows_XP property:platform ?u }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q11248> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P400> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q272629> .
?statement <http://www.wikidata.org/entity/P642> ?value. 
} 

SELECT ?value WHERE { wd:Q11248 p:P400 ?s . ?s ps:P400 wd:Q272629 . ?s pq:P642 ?value}