Assertion: vireo | /r/HasProperty | split into three separate species
Facets:
value: by american ornithologists
type: OTHER
value: recently
type: TEMPORAL
Source sentences:
text: The Cassin's Vireo (Vireo cassinii) was formerly known as the Solitary Vireo and was recently split into three separate species by American ornithologists: Cassin's, Plumbeous, and Blue-headed Vireos.