About: http://webisa.webdatacommons.org/290978393

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	One main problem of conventional audio books and paper braille books affecting educational content is that mathematics and other formulae were treated as either text or images.
http://www.w3.org/ns/prov#wasQuotedFrom	inftyreader.org