Assertion: iceberg lettuce's leaf | /r/CapableOf | form loose head
Facets:
value: very
type: DEGREE
Source sentences:
text: Bibb lettuce is mature when the leaves begin to cup inward to form a loose head.
text: Butterhead lettuces have soft, buttery-textured leaves that form very loose "heads".
text: is mature when the leaves begin to cup inward to form a loose head.