Consider the following premises. p_6 -> q_1. p -> p_1. p_1 <-> p_6. ~q_1. Can we infer p from them?
 From p_6 -> q_1, ~q_1 we can infer ~p_6. From p_1 <-> p_6, ~p_6 we can infer ~p_1. Finally, from p -> p_1, ~p_1 we can infer ~p, which contradicts p. Therefore, the answer is no.