About: http://webisa.webdatacommons.org/415716793

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	Sometime around 1700, a fourth key (G#) was added, and it was for this type of instrument that composers such as Vivaldi, Bach and Telemann wrote their demanding music.
http://www.w3.org/ns/prov#wasQuotedFrom	newworldencyclopedia.org