About: http://webisa.webdatacommons.org/91173515

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	Anything other than none causes the Serial Monitor application to append something to what you enter.That something can be detected on the Arduino, and used as the end of packet marker.
http://www.w3.org/ns/prov#wasQuotedFrom	arduino.cc