The sale was made to pay Yukos' US$ 27.5 billion tax bill, Yuganskneftegaz was originally sold for US$9.4 billion to a little known company Baikalfinansgroup which was later bought by the Russian state-owned oil company Rosneft.
The sale was made to pay Yuganskneftegaz's US$ 27.5 billion tax bill
The sale was made to pay Yukos' tax bill, not Yuganskneftegaz's. The system could not 
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(z0 / pay-01
    :ARG0 (z1 / company
              :name (z2 / name
                        :op1 "Yuganskneftegaz"))
    :ARG3 (z3 / sell-01)
    :ARG3 (z4 / bill-01
              :ARG0 z1
              :ARG3 (z5 / monetary-quantity
                        :quant 27300000000
                        :ARG1-of (z6 / tax-01)
                        :unit (z7 / dollar))
              :mod (z8 / country
                       :name (z9 / name
                                 :op1 "United"
                                 :op2 "States"
                                 :op3 "of"
                                 :op4 "America"))))
The sale was made to pay Yuganskneftegaz 's US$ 27.5 billion tax bill
z0 :ARG3 z3
z0 :ARG0 z1
z1 :name z2
z2 :op1 4
z8 :name z9
z9 :op1 3
z9 :op2 2
z9 :op3 5
z9 :op4 1
z5 :unit z7
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z5 :ARG1-of z6
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z4 :ARG0 z1
z0 :ARG3 z4