Assertion: asian carp | /r/AtLocation | the u.s.
Facets:
value: in the 1970’s
type: TEMPORAL
value: to control weed and parasite growth
type: PURPOSE
Source sentences:
text: Introduced to the U.S. in the 1970’s to control weed and parasite growth in aquatic farms, Asian carp eventually managed to get into the Mississippi River and establish breeding populations.