Assertion: paper's manufacture | /r/HasProperty | major industry
Facets:
value: in the valréas area
type: LOCATION
value: for more than a century
type: TEMPORAL
Source sentences:
text: Cardboard boxes were developed in France about 1840 for transporting the Bombyx mori moth and its eggs by silk manufacturers, and for more than a century the manufacture of cardboard boxes was a major industry in the Valréas area.