Assertion: group's plane | /r/HasProperty | b
Facets:
Source sentences:
text: The first m indicates the mirror plane perpendicular to the c-axis (a), the second m indicates the mirror planes parallel to the c-axis (b), and the c indicates the glide planes (b) and (c).
text: the secondindicates the mirror planes parallel to the c-axis (b), and theindicates the glide planes (b) and (c).