| http://www.w3.org/ns/prov#value | - For the first nine months of 2012, operating income was $732.5 million, compared with $622.0 million in the prior-year period.The increases in operating income for the third quarter 2012 reflect higher natural gas volumes gathered and processed in the natural gas gathering and processing segment offset by lower realized natural gas and natural gas liquids (NGL) product prices, particularly ethane
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