Assertion: tesseract's cell | /r/CapableOf | expand into truncated tetrahedra
Facets:
value: in the process
type: TEMPORAL
Source sentences:
text: In the process, the octahedral cells expand into truncated tetrahedra (half of their triangular faces are expanded into hexagons by pulling apart the edges), and the triangular prisms expand into hexagonal prisms (each with its three original square faces joined, as before, to small rhombicuboctahedra, and its three new square faces joined to cubes).