About: http://webisa.webdatacommons.org/352669836

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	Cave-ins also occur at drainage structures such as catch basins, drop inlets or storm drain manholes.
http://www.w3.org/ns/prov#wasQuotedFrom	portsmouthva.gov