About: http://webisa.webdatacommons.org/291501756

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	You are quite right Andy, you can use time stamps or spans with any Google Earth element and with images it is particularly useful to use spans, badly worded on my part.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com