Assertion: copper sulfate | /r/HasProperty | registered for use
Facets:
value: in 1956
type: TEMPORAL
value: in the united states
type: LOCATION
Source sentences:
text: Copper sulfate has been registered for use in pesticide products in the United States since 1956.
text: Copper sulfate has been used in the United States since the 1700s, and it was first registered for use in the United States in 1956.