Assertion: aspen's leaf | /r/CapableOf | flutter in the wind
Facets:
Source sentences:
text: Like Quaking Aspen, Bigtooth Aspen leaves have a flat stalk that causes the leaves to flutter in the wind, but its leaves are also more egg shaped with large, blunt teeth.
text: quaking aspen : small tree; roundish leaves with white undersides and flat petioles that cause leaves to flutter in the wind; greenish-white bark.