Assertion: keel | /r/CapableOf | retain until his eventual retirement
Facets:
value: in 1939
type: TEMPORAL
Source sentences:
text: After the Ruhleben experience, Keel no longer held recitals but he did continue in his role as a Professor of Singing at the Royal Academy of Music, a post which he had taken up before the war and retained until his eventual retirement in 1939.