Assertion: parallelogram's side | /r/HasProperty | straight
Facets:
Source sentences:
text: It has four straight sides where the opposite sides are both equal in length and parallel to each other.
text: It has four straight sides where the opposite sides are both equal in length and parallel to each other.
text: A parallelogram has four straight sides.
text: But the sides have to be straight, and it has to be 2-dimensional.