Consider the following premises. q_2 and q_10. r_4 or t_1. r_4 -> ~q_2. Can we infer t_1 from them? If possible, name the inference rules being used at each step.
 From q_2 and q_10 we can infer q_2 via simplification. From r_4 -> ~q_2, q_2 we can infer ~r_4 via modus tollens. Finally, from r_4 or t_1, ~r_4 we can infer t_1 via disjunctive syllogism. Therefore, the answer is yes.