About: http://webisa.webdatacommons.org/215087331

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 first attempt is a disaster: I print an 18% gray on a transparency sheet and cut 3 holes in it for the disks.
http://www.w3.org/ns/prov#wasQuotedFrom	gdargaud.net