About: http://webisa.webdatacommons.org/392832304

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	dule in a portable electronic device such as a cell phone or PDA, and has a sound output function (speaker function) in addition to an image display function.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com