About: http://webisa.webdatacommons.org/328557242

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	Some of the tricks are a bit obvious, like the multiply/divide by 5 and how to compute a 15% tip (a lot of places are starting to expect 20% now anyway).
http://www.w3.org/ns/prov#wasQuotedFrom	geeksaresexy.net