Assertion: cork tree's leaf | /r/HasProperty | flat
Facets:
value: often
type: DEGREE
Source sentences:
text: Oaks have leaves that can be lobed, serrated or flat on the edges.
text: A leaf is often flat, so it absorbs the most light, and thin, so that the sunlight can get to the green parts in the cells, which convert sunlight, carbon dioxide from the atmosphere, and water from the roots, into glucose and oxygen.