About: http://webisa.webdatacommons.org/448188487

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 general, voices switches are expensive due to the requirement to provide different types of services (e.g., switched voice calls, 9-1-1 emergency calls etc.).
http://www.w3.org/ns/prov#wasQuotedFrom	google.es