Assertion: killer whale's attack | /r/HasProperty | rare
Facets:
value: extremely
type: DEGREE
Source sentences:
text: Despite their apparent friendliness at marine parks and aquarium shows these large animals have been known to occasionally attack their trainers when they feel threatened or emotionally unstable and although these attacks are rare they can and have happened.
text: There are however a few cases of people being attacked in the wild, but these attacks are extremely rare and once the killer whale realized it wasn’t their typical food they gave up.
text: However, even an injured walrus is a formidable opponent for a polar bear, and direct attacks are rare.