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this happen in american space.
( z0 event :location ( z1 space :mod ( z2 country :name ( z3 name :op "America" ) ) ) :mod ( z4 this ) )
(z0 / event
    :location (z1 / space
                  :mod (z2 / country
                           :name (z3 / name
                                     :op1 "America")))
    :mod (z4 / this))
this happen in american space .
z0 :mod z4
z2 :name z3
z3 :op1 0
z1 :mod z2
z0 :location z1