Assertion: asbestos | /r/AtLocation | a variety of products
Facets:
value: to strengthen them
type: PURPOSE
value: in the past
type: TEMPORAL
value: until the 1970s
type: TEMPORAL
Source sentences:
text: In the past, asbestos was added to a variety of products to strengthen them and to provide heat insulation and fire resistance.
text: In the past, asbestos was added to a variety of products to strengthen them and to provide heat insulation and fire resistance.
text: However, until the 1970s, asbestos was added to a variety of products to strengthen them and to provide heat insulation and fire resistance.
text: In the past, asbestos was added to a variety of products to strengthen them and provide heat insulation and fire resistance.