About: http://webisa.webdatacommons.org/73698138

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	Operating margin is a non-GAAP measure calculated as operating revenues minus cost of gas, excluding operation and maintenance expense, depreciation and amortization, and taxes other than income taxes.
http://www.w3.org/ns/prov#wasQuotedFrom	4-traders.com