About: http://webisa.webdatacommons.org/428525423

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	Your code is a bit confusing, but it looks like your array $fi has the letters as keys and numbers as values.
http://www.w3.org/ns/prov#wasQuotedFrom	sitepoint.com