About: http://webisa.webdatacommons.org/268050727

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Still the largest energy source in the U.S. (40%) and in the world (35%), petroleum results in many environmental problems, such as acid rain, stratospheric ozone depletion, global warming, and environmental degradation.
http://www.w3.org/ns/prov#wasQuotedFrom	ufl.edu