Consider the following premises. forall y: W(y). forall y: S(y). exists y: R(y) <-> W(y). Can we infer exists y: S(y) and R(y) from them?
 From exists y: R(y) <-> W(y) we can infer exists y: W(y) -> R(y). From exists y: W(y) -> R(y), forall y: W(y) we can infer exists y: R(y). Finally, from forall y: S(y), exists y: R(y) we can infer exists y: S(y) and R(y). Therefore, the answer is yes.