About: http://webisa.webdatacommons.org/197653790

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	FIG. 17 is a graph plotting average sound level in the 400 to 7000 Hz range, against writing resistance for various writing systems including the present invention.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr