PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • % of the time with some 100 telescopes spread across the globe, but turbulence and other weather conditions could prevent it.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nasaspaceflight.com