Assertion: biosphere | /r/HasProperty | purchased by canadian government
Facets:
value: in 1990
type: TEMPORAL
value: after nearly fifteen years of disuse
type: TEMPORAL
Source sentences:
text: In 1990, after nearly fifteen years of disuse, the Biosphere was purchased by the Canadian government and re-purposed as an environmental exhibition space, dedicated to promoting an understanding of the St. Lawrence River and the ecosystem of the Great Lakes.