What is {date of birth} of {Abd al-Mu'min} that is {sourcing circumstances} is {circa} ?
As the birth date of Abd al-Mu'min's, what date was it?
What was Abd al-Mu'min's estimated date of birth?
SELECT ?z WHERE { resource:Abd_al-Mu'min property:date_of_birth ?y . ?y property:date_of_birth ?z . ?y property:sourcing_circumstances resource:circa }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q307312> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P569> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P1480> <http://wikidata.dbpedia.org/resource/Q5727902>
} 

SELECT ?obj WHERE { wd:Q307312 p:P569 ?s . ?s ps:P569 ?obj . ?s pq:P1480 wd:Q5727902 }