<http://webisa.webdatacommons.org/32036843> <http://www.w3.org/ns/prov#wasQuotedFrom> <sciencedaily.com> . <http://webisa.webdatacommons.org/32036843> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/32036843> <http://www.w3.org/ns/prov#value> "Teasing out the sources of NOx through history might tell us about the atmosphere of the past, how methane, ozone and other chemicals change in the atmosphere, and also provide a measure of global human emissions." . <http://webisa.webdatacommons.org/prov/292907407> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/32036843> .