PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The metric measure of paper weight is the areal density in grams per square meter (g/m2 or gsm). 1 lb wt is equivalent to 3.76 g/m2 for bond paper, 1.48 g/m2 for text stock, 2.70 g/m2 for card stock, and varying amounts for the other types of paper.
http://www.w3.org/ns/prov#wasQuotedFrom
  • unc.edu