About: http://webisa.webdatacommons.org/114533785

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	Also, it can be set up to distinguish between paper and other surfaces such as an operator's hand, which may accidentally or deliberately obscure a sensor.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com