About: http://webisa.webdatacommons.org/247929908

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	Either, there is no mass other than the singularity or some mass is outside our Gaussian sphere which can disturb the system we have assumed, and it can not be spherical...
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com