About: http://webisa.webdatacommons.org/324604688

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	Two things are changed.You can actually use one of the items as a kind of clock, only register status when it goes to zero.
http://www.w3.org/ns/prov#wasQuotedFrom	r-bloggers.com