About: http://webisa.webdatacommons.org/331198468

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	Pulse Width Modulation (PWM): PWM refers to the way in which microcontrollers, such as the Arduino, are able to emulate analog output via digital pins.
http://www.w3.org/ns/prov#wasQuotedFrom	julioterra.com