company-index_0   (697)
    Energy_1   (428)
        Integrated_Oil_and_Gas_2   (43)
        Oil_and_Gas_Exploration_and_Production_3   (188)
        Oil_and_Gas_Refining_and_Marketing_4   (44)
        Oil_and_Gas_Equipment_5   (22)
        Oil_and_Gas_Services_6   (73)
        Oil_and_Gas_Pipelines_and_Storage_7   (30)
        Petroleum_Product_Distribution_8   (28)
    Utilities_9   (269)
        Diversified_Utilities_10   (59)
        Electric_Utilities_11   (106)
        Independent_Power_Producers_and_Marketers_12   (25)
        Gas_Utilities_13   (40)
        Water_Utilities_14   (29)
        Alternative_Energy_Sources_15   (10) #####
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