<http://webisa.webdatacommons.org/prov/116993867>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/369192253> .
<http://webisa.webdatacommons.org/369192253>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/369192253>	<http://www.w3.org/ns/prov#value>	"Second, because a sailboat is a point relative to the radar beam, the size of the blip displayed on the radar screen depends on the radar antenna and the range." .
<http://webisa.webdatacommons.org/369192253>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<oceannavigator.com> .