Assertion: fern's leaf | /r/HasProperty | triangular
Facets:
Source sentences:
text: And the autumn fern is known for its triangular leaves, it's a Dryopteris erythrosora, and in autumn has coppery coloured fronds.
text: And the autumn fern is known for its triangular leaves, it's a Dryopteris erythrosora, and in autumn has coppery coloured fronds.