<http://webisa.webdatacommons.org/101481468>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<calibresigns.com> .
<http://webisa.webdatacommons.org/101481468>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/101481468>	<http://www.w3.org/ns/prov#value>	"Sometimes ground signs are blocked by objects such as traffic, pedestrians or physical structures." .
<http://webisa.webdatacommons.org/prov/275071614>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/101481468> .