About: http://webisa.webdatacommons.org/66437209

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	Furthermore, I am unable to delete the DWG1 block definition (as it is Not linked, all options are grayed out except for Select and Refresh).
http://www.w3.org/ns/prov#wasQuotedFrom	rhino3d.com