Assertion: crick | /r/CapableOf | become for second time
Facets:
value: in 1950
type: TEMPORAL
Source sentences:
text: He became a research student for the second time in 1950, being accepted as a member of Caius College, Cambridge, and obtained a Ph.D. in 1954 on a thesis entitled «X-ray diffraction: polypeptides and proteins».