About: http://webisa.webdatacommons.org/181610992

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	At night they have pronounced light characteristics.</P><P>Many lighthouses use red sectors to warn of shoals and other hazards and these sectors are displayed on the chart.
http://www.w3.org/ns/prov#wasQuotedFrom	sailnet.com