Assertion: boat | /r/ObjectUse | used in prehistoric times
Facets:
Source sentences:
text: Evidence from ancient references exists to prove that boats were used 900,000 years ago and in prehistoric times.
text: Circumstantial evidence, such as the early settlement of Australia over 40,000 years ago, findings in Crete dated 130,000 years ago, and in Flores dated to 900,000 years ago, suggest that boats have been used since prehistoric times.