PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Because trees and other plants absorb CO2 from the atmosphere, they reduce our overall greenhouse gas emissions by roughly 14 percent.Worldwide, however, the output of greenhouse gases is a source of grave concern: From the time the Industrial Revolution began to the year 2009, atmospheric CO2 levels have increased almost 38 percent and methane levels have increased a whopping 148 percent, accordi
http://www.w3.org/ns/prov#wasQuotedFrom
  • topix.com