About: http://webisa.webdatacommons.org/405408307

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	The idea is supposed to be that alt is an alternative to the image when the element cannot be rendered normally, whereas title is advisory information - a label that is applicable whether the image is there or not.
http://www.w3.org/ns/prov#wasQuotedFrom	nielsenhayden.com