Question: What was the position held by Glenda Jackson when she was a Member of the 51st Parliament of the United Kingdom?
Paraphrase: In what capacity did Glenda Jackson serve while she was a member of the UK Parliament?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q182408 p:P39 ?s . ?s ps:P39 wd:Q41582627 . ?s pq:P2937 ?value}