Assertion: fin whale | /r/HasProperty | downward sweeps
Facets:
value: usually
type: DEGREE
value: from about 30 to 15 hz
type: TEMPORAL
value: in frequency
type: OTHER
Source sentences:
text: Fin whales produce low frequency vocalizations that are called “20-Hz pulses” even though they are usually downward sweeps in frequency from about 30 to 15 Hz.