Assertion: blue whale's call | /r/HasProperty | moan
Facets:
Source sentences:
text: These calls have been described as pulses, grunts, groans, and moans, and are typically in the 15-40 Hz range, often below the threshold of human hearing.
text: These calls have been described as pulses, grunts, groans, and moans, and are typically in the 15-40 Hz range, often below the threshold of human hearing.