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The United States and Canada have had a dispute for years.
( z0 dispute :ARG0 ( z1 and :op ( z2 country :name ( z3 name :op "United" :op "States" ) ) :op ( z4 country :name ( z5 name :op "Canada" ) ) ) :duration ( z6 multiple :op ( z7 temporal-quantity :quant 1 :unit ( z8 year ) ) ) )
(z0 / dispute-01
    :ARG0 (z1 / and
              :op1 (z2 / country
                       :name (z3 / name
                                 :op1 "United"
                                 :op2 "States"))
              :op2 (z4 / country
                       :name (z5 / name
                                 :op1 "Canada")))
    :duration (z6 / multiple
                  :op1 (z7 / temporal-quantity
                           :quant 1
                           :unit (z8 / year))))
The United States and Canada have had a dispute for years .
z3 :op1 3
z2 :name z3
z3 :op2 2
z1 :op1 z2
z1 :op2 z4
z4 :name z5
z5 :op1 1
z0 :ARG0 z1
z0 :duration z6
z6 :op1 z7
z7 :unit z8
z7 :quant 0