About: http://webisa.webdatacommons.org/417175951

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	Assuming that the number of all gradation bits is equal to N wherein N is a positive integer equal to or greater than three, a subfield of a M-th gradation bit is arranged almost at the center of a time axis in all subfield periods.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr