About: http://webisa.webdatacommons.org/452644917

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	http://www.rcgroups.com/forums/showt...ht=san+anselmo - Another reference to 4 corners and tick point - have not checked them out yet, though - sounds like mostly gliders.
http://www.w3.org/ns/prov#wasQuotedFrom	rcgroups.com