About: http://webisa.webdatacommons.org/123025672

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	As aging and other effects contribute to higher frequency loss (6???8 kHz on an audiogram), this notch may be obscured and entirely disappear.
http://www.w3.org/ns/prov#wasQuotedFrom	thefullwiki.org