Consider the following premises. q_3 <-> t. t <-> p. q_3 or q. ~p. Can we infer q from them?
 From q_3 <-> t we can infer q_3 -> t. From t <-> p, ~p we can infer ~t. From q_3 -> t, ~t we can infer ~q_3. Finally, from q_3 or q, ~q_3 we can infer q. Therefore, the answer is yes.