Assertion: black truffle | /r/AtLocation | france
Facets:
value: near perigord
type: LOCATION
Source sentences:
text: The coveted Italian winter white truffle grows only in the Alba and Piedmont regions, while the black truffle is found both in France (near Perigord, which is why the black truffle is also known as the Perigord truffle) and Italy, but also across Western Europe.