Assertion: boysenberry | /r/HasProperty | a variety of blackberry
Facets:
Source sentences:
text: Boysenberries are a variety of Blackberry (crossed with a Loganberry) and therefore, many of the same principals of pruning Blackberries, apply to pruning Boysenberries.
text: Boysenberries are very large bramble fruits (think the size of a human thumb), and are considered to be a variety of the blackberry (Rubus ursinus).
text: The boysenberry is a variety of blackberry; it's possible