Assertion: plum's flower | /r/HasProperty | double
Facets:
Source sentences:
text: The ornamental plums are bred to have single or double white or pink flowers.
text: The showy flowers may be white or pink, single or double; some are fragrant.
text: Its chief value is in the showy flower, which is either white or pink, single or double, and appears in midspring on old wood.