Assertion: tern | /r/RelatedTo | gull
Facets:
value: than to the skimmers
type: OTHER
value: more closely
type: DEGREE
Source sentences:
text: Behaviour and morphology suggest that the terns are more closely related to the gulls than to the skimmers or skuas, and although Charles Lucien Bonaparte created the family Sternidae for the terns in 1838, for many years they were considered to be a subfamily, Sterninae, of the gull family, Laridae.