Assertion: double fertilization | /r/HasProperty | discovered by sergei nawaschin
Facets:
value: in léon guignard in france
type: LOCATION
value: in kiev
type: LOCATION
value: in russian empire
type: LOCATION
value: a century ago
type: TEMPORAL
Source sentences:
text: Double fertilization was discovered more than a century ago by Sergei Nawaschin and Grignard in Kiev, Russian Empire, and Léon Guignard in France.