About: http://webisa.webdatacommons.org/209234432

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	These iframes are very common, and are used by both publishers and ad servers to prevent ads and other external content from intentionally or inadvertently interfering with websites.
http://www.w3.org/ns/prov#wasQuotedFrom	adexchanger.com