About: http://webisa.webdatacommons.org/239479738

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	In addition, on the upper part of the glasses, the system shows a diagram with the aggregate of the answers given by the students, which can be particularly useful in large groups.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org