About: http://webisa.webdatacommons.org/272107722

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	The idea here is that Excelsior uses layout statements to define a super-grid, each super-cell of which is a table, a heading or other label, or blanks.
http://www.w3.org/ns/prov#wasQuotedFrom	drdobbs.com