About: http://webisa.webdatacommons.org/422132804

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	said sheet including an upper surface having at least one downward slope extending from said raised forward edge to said central passage.
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com