About: http://webisa.webdatacommons.org/432040367

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 any event, the propellant must be dry and free of contaminants, principally so as not to interfere with the marking of the substrate by the marking material and so as not to cause or induce clogging of the channel.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com