Assertion: walnut | /r/AtLocation | the united states
Facets:
Source sentences:
text: In 1998, walnuts from California accounted for 99% of all walnuts grown in the United States, and for 38% of the world's production of walnuts.
text: California produces 95 percent of the walnuts grown in the United States.
text: California produces 99 percent of the walnuts grown in the United States.