Assertion: soft tub | /r/HasProperty | available
Facets:
value: since the 1970s
type: TEMPORAL
Source sentences:
text: While soft tubs have been available since the 1970s, by the 1990s they were being sold by major manufacturers.
text: While soft tubs have been available since the 1970s, by the 1990s they were being sold by major manufacturers.