Assertion: chloroplast's structure | /r/HasProperty | elucidated by hans fischer
Facets:
value: after initial work
type: TEMPORAL
value: in 1940
type: TEMPORAL
Source sentences:
text: After initial work done by German chemist Richard Willstätter spanning from 1905 to 1915, the general structure of chlorophyll a was elucidated by Hans Fischer in 1940.