About: http://webisa.webdatacommons.org/323765940

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	With (1) and (2) you can show that the cell of $C$ has at least $n-1$ edges and that it is bounded, i.e. each edge is a segment, which means that the boundary must have at least $n-1$ vertices and this concludes the proof.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com