Assertion: mule's horse | /r/CapableOf | consider distinct species
Facets:
value: often
type: TEMPORAL
Source sentences:
text: By the early 19th century, two races were still extant: the tarpan (E. caballus caballus), found in eastern Europe until the middle of the century, and Przewalski’s horse (E. caballus przewalskii, often considered a distinct species, E. przewalskii), which inhabited the remote steppe region between China and Mongolia.