Assertion: wren | /r/CapableOf | end with his appointment
Facets:
value: in 1657
type: TEMPORAL
Source sentences:
text: Receiving his M.A. in 1653, Wren was elected a fellow of All Souls College, Oxford , in the same year and began an active period of research and experiment, ending with his appointment as Gresham professor of astronomy in Gresham College, London, in 1657.