Question: Give me the object has role for BBC has manager/director as Tony hall,baron hall of Birkenhead?
Paraphrase: What role does manager/director Tony Hall, Baron of Birkenhead, play at BBC?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q9531 p:P1037 ?s . ?s ps:P1037 wd:Q80390 . ?s pq:P3831 ?value}