Assertion: birch's leaf | /r/HasProperty | 3–6 millimetres
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: The flowers are monoecious, opening with or before the leaves and borne once fully grown these leaves are usually 3–6 millimetres (1⁄ 8 –1⁄ 4 in) long on three-flowered clusters in the axils of the scales of drooping or erect catkins or aments.