Assertion: blackberry | /r/HasProperty | trained to trellis
Facets:
Source sentences:
text: However, they can be trained to a trellis no higher than 6'-8'.
text: Blackberries produce fruit on second year canes and need to be trained onto wire supports or trellis.
text: The blackberries are trained up the trellis, with floricanes tied to one side of the “T” and primocanes to the other side.