Assertion: fern's leaf | /r/CapableOf | have originated four times
Facets:
value: independently
type: MANNER
value: in progymnosperms
type: LOCATION
value: in horsetails
type: LOCATION
value: in seed plants
type: LOCATION
value: in the ferns
type: LOCATION
Source sentences:
text: The more familiar leaves, megaphylls, are thought to have originated four times independently, in the ferns, horsetails, progymnosperms and seed plants.