About: http://webisa.webdatacommons.org/18779255

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	Along with this code, there is an else statement (i.e. when a box is unchecked), that switches the layer off.
http://www.w3.org/ns/prov#wasQuotedFrom	esri.com