About: http://webisa.webdatacommons.org/422968135

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	The apparatus is useful in a method of relieving eyestrain for an operator of a video display terminal having a display screen and an operator control station such as a keyboard.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com