what is the {subject has role} for {W.E.B. Du Bois} has {member of} as {Alpha Phi Alpha} ?
What did WEB Du Bois do in the Alpha Phi Alpha?
What was the role of W.E.B. Du Bois as a member of Alpha Phi Alpha?
SELECT ?n WHERE { ?a property:member_of resource:Alpha_Phi_Alpha . ?a property:subject_has_role ?n . resource:W.E.B._Du_Bois property:member_of ?a }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q158060> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P463> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q2839513> .
?statement <http://www.wikidata.org/entity/P2868> ?value. 
} 

SELECT ?value WHERE { wd:Q158060 p:P463 ?s . ?s ps:P463 wd:Q2839513 . ?s pq:P2868 ?value}