About: http://webisa.webdatacommons.org/326269986

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	safer, more accurate navigation around sandbars, rocks, and other obstacles.
http://www.w3.org/ns/prov#wasQuotedFrom	nara.gov