Consider the following premises. p -> q. p_8 <-> q_8. ~p_8. q -> r_11. r_11 -> q_8. Can we infer p from them?
 From p -> q, q -> r_11 we can infer p -> r_11. From p_8 <-> q_8, ~p_8 we can infer ~q_8. From p -> r_11, r_11 -> q_8 we can infer p -> q_8. Finally, from p -> q_8, ~q_8 we can infer ~p, which contradicts p. Therefore, the answer is no.