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This is about web functionality.
( z0 concern :ARG0 ( z1 this ) :ARG1 ( z2 function :ARG0 ( z3 web ) ) )
(z0 / concern-02
    :ARG0 (z1 / this)
    :ARG1 (z2 / function-01
              :ARG0 (z3 / web)))
This is about web functionality .
z0 :ARG0 z1
z2 :ARG0 z3
z0 :ARG1 z2