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The problem is impossible to solve.
( z0 possible :ARG1 ( z1 solve :ARG1 ( z2 problem ) ) :polarity - )
(z0 / possible-01
    :ARG1 (z1 / solve-01
              :ARG1 (z2 / problem))
    :polarity -)
The problem is impossible to solve .
z0 :polarity 0
z0 :ARG1 z1
z1 :ARG1 z2