Assertion: technetium | /r/HasProperty | discovered by carlo perrier
Facets:
value: in 1937
type: TEMPORAL
value: in italy
type: LOCATION
Source sentences:
text: Technetium was discovered by Carlo Perrier (IT) and Emilio Segré (US) in 1937.
text: Technetium ( Greek technetos meaning "artificial") was discovered by Carlo Perrier[?]
text: Technetium was discovered by Emilio Segre and Carlo Perrier in 1937 in Italy.