About: http://webisa.webdatacommons.org/368665843

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	Strontium-90 energy packs were out of the question since the 1950s, I explained, so the only mechanism that made sense to me was a piezoelectric crystal generating a small voltage with every step.
http://www.w3.org/ns/prov#wasQuotedFrom	cringely.com