About: http://webisa.webdatacommons.org/49405246

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	I can see a bit of overlap then between the 200m, 500m and 1000m ??? probably the reason why your 200m is fairly recent and the others are a bit older.
http://www.w3.org/ns/prov#wasQuotedFrom	nsmb.com