Assertion: lake | /r/HasProperty | formed
Facets:
value: by building the hoover dam
type: MANNER
Source sentences:
text: Created as a reservoir, the man-made lake was formed by building the Hoover Dam on the Colorado River.
text: Situated in Mammoth, California, Mono is one of the oldest lakes in North America being formed 760,000 years ago.
text: Approximately 12,000 years ago, this lake was formed when glaciers pushed rock debris to the side and carved out a canyon.
text: The man-made lake was formed after the site was used as a quarry for taconite mining between the mid-1960s through April 1983.