Petitioners submit such a blanket extension of existing terms exceeds Congress's power under the Copyright Clause and it violates the First Amendment. Now, the Government has responded to petitioners' argument in a way that betrays a simple but fundamental confusion.
the Government has responded to petitioners' argument and causing no confusion. 
( z1 and :op ( z2 respond :ARG0 ( z3 government-organization :ARG0-of ( z4 govern ) ) :ARG1 ( z5 argue :ARG0 ( z6 person :ARG0-of ( z7 petition ) ) ) ) :op ( z8 confuse :polarity - :ARG0 z3 ) )