About: http://webisa.webdatacommons.org/293413058

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 one embodiment, the Add button is only enabled if there is a filter selected in the Filters list and the Move Up, Move Down, and Remove buttons need only enabled if there is a filter selected in the Filter Chain.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com