(a) Γ is \(\{ \left( \forall P \left( x \right) \right) \rightarrow Q \left( y \right), \left( \forall x P \left( x \right) \right) \lor \left( \forall x R \left( x \right) \right), \exists x...(a) Γ is {(∀P(x))→Q(y),(∀xP(x))∨(∀xR(x)),∃x¬R(x)}; ϕ is Q(y).