PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • However, ultrasound does provide a lower cost, less complicated and more compact alternative to MRI. Ultrasound imaging systems can typically be operated by one person, are a fraction of the cost and size of an MRI system, are mobile, and are less restrictive on the operating environment.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.es