Consider the following premises. p_11 -> q_11. p -> q_2. p_6 or p_11. q_1 -> p. q_11 -> q_2. p_6 -> q_1. Can we infer q_2 from them? If possible, name the inference rules being used at each step.
 From p_11 -> q_11, q_11 -> q_2 we can infer p_11 -> q_2 via transitivity. From p_6 -> q_1, q_1 -> p we can infer p_6 -> p via transitivity. From p_6 -> p, p -> q_2 we can infer p_6 -> q_2 via transitivity. Finally, from p_6 -> q_2, p_11 -> q_2, p_6 or p_11 we can infer q_2 via disjunction elimination. Therefore, the answer is yes.