Assertion: crocodile's tail | /r/ObjectUse | used for swimming
Facets:
value: for protection against predators
type: PURPOSE
Source sentences:
text: Their tail is extremely long and powerful, and is used for swimming.
text: Long and flattened tail is used both for swimming and for protection against predators.
text: They have four short legs, giving them a rather sprawling gait, and a long tail, which is used for swimming.