About: http://webisa.webdatacommons.org/308750756

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 addition, alt text is a valuable tool for indexing image content for search engines: Search engines such as Google, MSN, and Yahoo! all use alt text as a key method of indexing images for their respective image search listings.
http://www.w3.org/ns/prov#wasQuotedFrom	dummies.com