About: http://webisa.webdatacommons.org/69250856

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 can not even prove yesterday existed, if this is the case, since it might be some sort of ghost or illusion caused by changes in the laws since the real yesterday, in which case, physics is an entirely vain endeavor.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org