Assertion: cattail's leaf | /r/CapableOf | provide material
Facets:
value: for trays
type: PURPOSE
value: for other types of basketry
type: TRANSITIVE-OBJECT
Source sentences:
text: The seeds, roots, basal stems, and rhizomes provided a source of starch, the leaves provided material for trays and other types of basketry, and the flowers and pollen had symbolic functions in many rituals.