Assertion: willow's leaf | /r/HasProperty | shaped at the base
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Balsam Willow (Salix pyrifolia) has shiny red twigs and glossy leaves like Diamond-leaf Willow, but its leaves are more sharply pointed at the tip, often heart-shaped at the base, have a network of prominent veins, and fruit is hairless.