About: http://webisa.webdatacommons.org/421055587

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	In ths case when you explicitly add Administrator whis is a user, overrides the policy for Administrators" which is a group and voila, you get your permissions.
http://www.w3.org/ns/prov#wasQuotedFrom	serverfault.com