About: http://webisa.webdatacommons.org/9706601

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	Pololu also sells two expansion PCBs that sit on top of the 3pi base for adding additional sensors and other hardware.
http://www.w3.org/ns/prov#wasQuotedFrom	makezine.com