About: http://webisa.webdatacommons.org/321691714

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	Measuring a fuel cell's overall performance is relatively easy, but measuring its components individually as they work together is a challenge.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org