Assertion: wild killer whale | /r/HasProperty | cases of captive orcas
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Source sentences:
text: Wild killer whales are not considered a threat to humans and no fatal attack on humans has ever been documented, but there have been cases of captive orcas killing or injuring their handlers at marine theme parks.
text: Wild killer whales are not considered a threat to humans, but there have been cases of captive orcas killing or injuring their handlers at marine theme parks.