About: http://webisa.webdatacommons.org/455667688

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 Portolan is a map designed for Dead Reckoning a form of marine navigation used in the 15th century.
http://www.w3.org/ns/prov#wasQuotedFrom	cartographersguild.com