Assertion: bird's back | /r/HasProperty | green
Facets:
Source sentences:
text: Birds that live in green trees often have green backs, even if they have bright-coloured breasts.
text: The wattles and orbital skin are yellow; the ruff or cape is light orange; the upper back is green and the rest of the back and rump is golden-yellow.
text: Their lower back is golden, and their upper back is green.