Assertion: fern's frond | /r/HasProperty | fertile
Facets:
Source sentences:
text: There’s different from other ferns because they have both sterile and fertile fronds.
text: Fronds that have sporangia are called fertile fronds.
text: Fronds can be fertile or sterile.
text: Fronds can be fertile or sterile.
text: The species is sometimes known as flowering fern due to the appearance of its fertile fronds.