About: http://webisa.webdatacommons.org/273861253

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	reflected and scattered by the portions other than the mark portions, and this scattered light is not filtered out and reaches the photoelectric detector as noise so that the alignment operation is sometimes disabled.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com