Assertion: octahedron's corner | /r/HasProperty | vertex
Facets:
Source sentences:
text: What kind of faces does it have, and how many meet at a corner (vertex)?
text: 8 corners (vertices)
text: 12 corners (vertices)
text: 4 corners (vertices)
text: 6 corners (vertices)
text: 30 corners (vertices)
text: Have congruent corners (vertices)