Assertion: wildebeest's tail | /r/HasProperty | black
Facets:
Source sentences:
text: The long, horse-like tail is black, as is the mane which extends from the horns, over the nape to the shoulders.
text: The blue wildebeest is dark grey, has a blackish tail and has dark, vertical stripes on its neck.
text: Its bright-white colour gives this animal the vernacular name of "white-tailed gnu", and also distinguishes it from the blue wildebeest, which has a black tail.