Assertion: icosahedron's dodecahedron | /r/HasProperty | small hollow object
Facets:
Source sentences:
text: A Roman dodecahedron or Gallo-Roman Dodecahedron is a small hollow object made of copper alloy which has been cast into a dodecahedral shape: twelve flat pentagonal faces, each face having a circular hole of varying diameter in the middle, the holes connecting to the hollow center.