About: http://webisa.webdatacommons.org/335747721

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	Such spacing is presently contemplated as ranging from 5 mm to 500 mm, and in presently preferred embodiments ranges from 30-40 mm.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com