PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • However, randomized controlled trials tend to lack external validity, because the study is testing a specific intervention within a specific context, defined by factors such as the health system, payment scheme, workforce training, and management culture.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nih.gov