what is the {located at street address} for {AT&T} has {headquarters location} as {Dallas} ?
Please state the AT&T headquarters street address in Dallas.
What is the street address for the AT&T headquarters in Dallas?
SELECT ?c WHERE { resource:AT&T property:headquarters_location ?s . ?s property:P969 ?c . ?s property:headquarters_location resource:Dallas }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q35476> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P159> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q16557> .
?statement <http://www.wikidata.org/entity/P969> ?value. 
} 

SELECT ?value WHERE { wd:Q35476 p:P159 ?s . ?s ps:P159 wd:Q16557 . ?s pq:P969 ?value}