About: http://webisa.webdatacommons.org/193131326

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 present invention contemplates sampling heads comprised of materials, including but not limited to, cotton, polyester, rayon, teflon, and other synthetic and natural materials.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com