About: http://webisa.webdatacommons.org/199469877

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	Some stages also contain optional items to pick up, such as keys that can be used to open locked doors in later stages to reveal hidden areas.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com