<http://webisa.webdatacommons.org/152327560>	<http://www.w3.org/ns/prov#value>	"But methane is a very potent greenhouse gas - about 23 times more effective at trapping heat than carbon dioxide on a 100-year time scale." .
<http://webisa.webdatacommons.org/152327560>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<phys.org> .
<http://webisa.webdatacommons.org/prov/509575560>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/152327560> .
<http://webisa.webdatacommons.org/152327560>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .