Assertion: blackberry's flower | /r/HasAspect | 5 petals
Facets:
Source sentences:
text: Each flower has 5 petals that are white (in some cases a pale pink).
text: The flowers have petals greenish to whitish, recurved when aged and surround prominent bright yellow anthers.
text: These flowers are small, whitish pink, has five petals and grow in clusters.
text: Each flower has 5 petals that are white to rose colored and about 1 inch in diameter.