About: http://webisa.webdatacommons.org/53836234

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	However, since the negative charging type organic photoconductor utilizes negative-polarity corona discharge, problems such as large amount of ozone generated, environmental pollution, deterioration of photoconductor, etc. have arisen.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com