About: http://webisa.webdatacommons.org/452515873

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	The heater also vaporizes substances such as propylene glycol and glycerol to produce theatrical smoke similar to the white puff produced when exhaling tobacco cigarettes.
http://www.w3.org/ns/prov#wasQuotedFrom	mskcc.org