Assertion: anthrax | /r/HasProperty | spread by letter
Facets:
value: deliberately
type: MANNER
value: in 2001
type: TEMPORAL
Source sentences:
text: In 2001, anthrax was deliberately spread by letters mailed through the U.S. Postal Service.
text: In 2001, anthrax was deliberately spread by letters mailed through the U.S. Postal Service.