About: http://webisa.webdatacommons.org/250350384

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	At that time the art of telephone transmission was still in its infancy, one of the main problems being that the signal quickly became distorted as the distance between points increased.
http://www.w3.org/ns/prov#wasQuotedFrom	ieeeghn.org