Assertion: lilac's flower | /r/HasAspect | petal
Facets:
Source sentences:
text: A flower having sepals, petals, stamens, and pistils is complete; lacking one or more of such structures, it is said to be incomplete.
text: The flowers in most members of the family have four sepals, four petals, two stamens, and two fused carpels that form a single superior ovary.