Assertion: octahedron's face | /r/HasProperty | replaced with vertex
Facets:
Source sentences:
text: It is the dual of a cube - in other words, it is a cube where all vertices have been replaced with faces and all faces have been replaced with vertices.
text: It is the dual of a cube - in other words, it is a cube where all vertices have been replaced with faces and all faces have been replaced with vertices.