About: http://webisa.webdatacommons.org/104094418

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	You must do a bit of work to locate reliable tour operators, but there are a lot of resources, e.g. tour books, the internet, cruise critic and such, and this site.
http://www.w3.org/ns/prov#wasQuotedFrom	fodors.com