About: http://webisa.webdatacommons.org/52907769

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	There are no equations, no rules, the only way to know the best for your query is to experiment and see.But like I said, your tables sizes are way too small to be meaningful.It looks like you are playing on a PC with a single spindle . .
http://www.w3.org/ns/prov#wasQuotedFrom	dbaforums.org