Consider the following premises. s_4 <-> S_16(a_16). t_1 -> q_3. ~R_16(a_16) or t_1. s_4 -> q_3. forall x_16: R_16(x_16) or S_16(x_16). Can we infer u from them? If possible, name the inference rules being used at each step.
We cannot infer that from the premises. Therefore the answer is no.