Assertion: robin | /r/HasProperty | one of the first
Facets:
Source sentences:
text: Robins are very vocal birds and are one of the first to sing in the morning and the last to stop at night.
text: They are all wonderful singers and some of the first birds heard in the early morning before sunrise.
text: Breeding begins in early April, and the robin is one of the first songbirds to begin laying eggs each spring.