Assertion: dinosaur's tail | /r/CapableOf | counterbalance its large head
Facets:
Source sentences:
text: T. rex had strong thighs and a powerful tail, which counterbalanced its large head and allowed it to move quickly.
text: T. rex had strong thighs and a powerful tail, which counterbalanced its large head (Sue's skull is 5 feet, or 1.5 m, long) and allowed it to move quickly.