Assertion: opossum | /r/HasProperty | transferred across st. clair rivers
Facets:
value: by trains
type: MANNER
value: by motor vehicles
type: OTHER
value: accidentally
type: MANNER
Source sentences:
text: Some people speculate the expansion into Ontario mostly occurred by opossums accidentally being transferred across the St. Lawrence, Niagara, Detroit and St. Clair Rivers by motor vehicles or trains they may have climbed upon.