About: http://webisa.webdatacommons.org/365023416

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	??? Agricultural soil management activities, such as fertilizer application and other cropping practices, were the largest source of U.S. N 2 O emissions, accounting for 68 percent (261.5 Tg CO 2 Eq.) of 2004 emissions.
http://www.w3.org/ns/prov#wasQuotedFrom	state.gov