Assertion: crick | /r/CapableOf | start to build their model
Facets:
value: in february
type: TEMPORAL
Source sentences:
text: The upshot of all this was that when Crick and Watson started to build their model in February 1953 they were working with critical parameters that had been determined by Franklin in 1951, and which she and Gosling had significantly refined in 1952, as well as with published data and other very similar data to those available at King's.