Consider the following premises. forall x_10: S_2(x_10) <-> Q_7(x_10). forall x_10: ~P_10(x_10) or R(x_10). exists x_10: P_10(x_10) or S_2(x_10). forall x_10: Q_7(x_10) <-> R(x_10). Can we infer forall x_10: ~Q_7(x_10) from them?
 From exists x_10: P_10(x_10) or S_2(x_10), forall x_10: ~P_10(x_10) or R(x_10) we can infer exists x_10: S_2(x_10) or R(x_10). From forall x_10: S_2(x_10) <-> Q_7(x_10) we can infer forall x_10: S_2(x_10) -> Q_7(x_10). From forall x_10: Q_7(x_10) <-> R(x_10) we can infer forall x_10: R(x_10) -> Q_7(x_10). Finally, from forall x_10: S_2(x_10) -> Q_7(x_10), forall x_10: R(x_10) -> Q_7(x_10), exists x_10: S_2(x_10) or R(x_10) we can infer exists x_10: Q_7(x_10), which contradicts forall x_10: ~Q_7(x_10). Therefore, the answer is no.