Assertion: pork | /r/AtLocation | the united states
Facets:
value: between 1997
type: TEMPORAL
value: between 2001
type: TEMPORAL
value: commercially
type: MANNER
Source sentences:
text: One study showed that only eight cases of trichinellosis (also called trichinosis) could be attributed to pork grown commercially in the United States between 1997 and 2001.