About: http://webisa.webdatacommons.org/417694005

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	In each level, there are 10 waves, and at the end of every level is a boss, which must be defeated in order to advance (or warp) to a new system.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org