About: http://webisa.webdatacommons.org/196921284

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	A warning on a navigational chart indicating a possible rock, shoal, or other hazard, the exact position of which is unknown.
http://www.w3.org/ns/prov#wasQuotedFrom	vocuspr.com