Assertion: whale's sound | /r/CreatedBy | blue whale
Facets:
Source sentences:
text: The loudest sound ever recorded from an animal was produced by a blue whale.
text: A sound produced by a Blue Whale may last between 10 to 30 seconds.
text: If all the conditions are good, blue whales can hear sounds produced by another blue whale even if they are 1600kms apart.