Assertion: wren's number | /r/HasProperty | subspecies of the house wren
Facets:
value: formerly
type: TEMPORAL
Source sentences:
text: A number of the Troglodytes species, such as the Clarión wren, were formerly considered subspecies of the house wren, and it has been argued that at least the tropical forms of the house wren should be further split as the southern house wren, Troglodytes musculus.