About: http://webisa.webdatacommons.org/397210447

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	That implies that Sagittarius A* is extremely massive and since it is so small it must also be hugely dense.That???s why many astronomers believe this object is a supermassive black hole lying at the centre of the galaxy.
http://www.w3.org/ns/prov#wasQuotedFrom	medium.com