PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • If the pH control agent released, for example, is a buffer that contains both pH increasing and pH decreasing components, the system comprises a modulating feedback control loop system that will continually monitor the pH in the article and will maintain the pH level in the article at the desired set point or within a target range of the buffer whether the pH is raised or lowered.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com