About: http://webisa.webdatacommons.org/277719294

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	He???s saying that there is a problem of calculating without numbers, because you are trying to calculate with things that are heterogeneous, meaning apples and oranges.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com