About: http://webisa.webdatacommons.org/368952012

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	Let's say each level has a kind of lever or hatch to move from left to right.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com