About: http://webisa.webdatacommons.org/414900955

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	Can you check with firebug if there is a javascript error in admin area that can break the login button ?
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.org