Assertion: fern | /r/HasProperty | bi-pinnate
Facets:
Source sentences:
text: Hard fern is singly pinnate, as each frond has only one series of leaflets on it, whereas many ferns are bi-pinnate, with each leaflet subdivided again into further leaflets, and bracken (Pteridium aquilinum) is tri-pinnate, with each leaflet subdividing three times.