Assertion: broccoli | /r/AtLocation | the united states
Facets:
value: since 1925
type: TEMPORAL
value: commercially
type: MANNER
Source sentences:
text: California produces 90 percent of the broccoli grown in the United States.
text: It was not until the 1920s that it was commercially grown in the United States.
text: California is responsible for 90 percent of the broccoli grown in the United States.
text: It has been grown worldwide for centuries but has only been grown in the United States since 1925.
text: Broccoli has been grown in Europe for centuries, but has only been grown in the United States since 1925.