About: http://webisa.webdatacommons.org/222800671

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	Maybe the signs were a part of an upcoming art installation by a sculptor, left out to get a little more grit, to get intentionally rained upon.
http://www.w3.org/ns/prov#wasQuotedFrom	typepad.com