Assertion: coneflower's leaf | /r/HasProperty | oval
Facets:
Source sentences:
text: Coneflowers produce lanceolate, elliptical or oval leaves with long petioles.
text: The alternate leaves, borne by a petiole from 0 to 17 cm, are oval to lanceolate, 5-30 x 5-12 cm; the margin is tightened to toothed.