Assertion: nightingale's song | /r/CapableOf | serve attracting a mate
Facets:
Source sentences:
text: Only unpaired males sing regularly at night, and nocturnal song is likely to serve attracting a mate.
text: Only unpaired males sing regularly at night, and nocturnal song is likely to serve attracting a mate.
text: Only unpaired males sing regularly at night, and nocturnal song is likely to serve attracting a mate.
text: Only unpaired males sing regularly at night, and nocturnal song is likely to serve attracting a mate.
text: Only unpaired males sing regularly at night, and nocturnal song is likely to serve attracting a mate.
text: Only unpaired males sing regularly at night, and nocturnal song is likely to serve attracting a mate.