Assertion: mountain ash's leaflet | /r/HasProperty | lanceolate or long oval
Facets:
Source sentences:
text: Leaflets 13 to 17, lanceolate or long oval, two to three inches long, one-half to two-thirds broad, unequally wedge-shaped or rounded at base, serrate, acuminate, sessile, the terminal one sometimes borne on a stalk half an inch long, feather-veined, midrib prominent beneath, grooved above.