PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Smart cities industry, which offers solutions to cope with water and energy shortages, higher air pollution and other challenges due to rapid urbanization, is projected to be worth more than $400 billion by 2020, according to experts.
http://www.w3.org/ns/prov#wasQuotedFrom
  • tradearabia.com