Assertion: bird nest | /r/HasProperty | those of some hummingbirds
Facets:
Source sentences:
text: The smallest bird nests are those of some hummingbirds, tiny cups which can be a mere 2 cm (0.8 in) across and
text: The smallest bird nests are those of some hummingbirds, tiny cups which can be a mere 2 cm across and 2–3 cm high.