Assertion: nerve agent | /r/HasProperty | invented by accident
Facets:
value: in the 1930s
type: TEMPORAL
Source sentences:
text: The first nerve agents were invented by accident in the 1930s when researchers were trying to make cheaper and better alternatives to nicotine as insecticides.
text: The first nerve agents were invented by accident in the 1930s when researchers were trying to make cheaper and better alternatives to nicotine as insecticides.
text: The first nerve agents were invented by accident in the 1930s when researchers were trying to make cheaper and better alternatives to nicotine as insecticides.