Assertion: slide fastener's pair | /r/HasProperty | 21 e
Facets:
Source sentences:
text: 1 and 2 , a pair of sheet-like right and left pull guide pieces 21 e, 21 e are formed integrally at corners in which the fitting guide groove 27 and the pawl body accommodating concave portion 21 b intersect each other substantially in the central portion of the upper blade piece 21 such that they project upward substantially in triangular shapes as seen in a side view.