About: http://webisa.webdatacommons.org/307261363

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 DDR register, determines whether the pin is an INPUT or OUTPUT. The PORT register controls whether the pin is HIGH or LOW, and the PIN register reads the state of INPUT pins.DDR and PORT registers may be both written to, and read.
http://www.w3.org/ns/prov#wasQuotedFrom	arduino.cc