PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Transform variables with algebraic formulas or with a variety of functions including logarithms, exponentials, powers, cumulation of stocks, previous-peaks, random numbers, conversion of monthly to quarterly series or of quarterly to annual series, and interpolation from annual to quarterly series or from quarterly to annual series.
http://www.w3.org/ns/prov#wasQuotedFrom
  • umd.edu