Consider the following premises. For all x_8, if x_8 were bored, then x_8 is a poet. If John were a poet, then John is a mechanic. For all x_8, if x_8 were a mechanic, then x_8 is bored. Can we infer the following from them? If we can, name the inference rule being used: If John were a mechanic, then John is a poet.
 From the fact that for all x_8, if x_8 were a mechanic, then x_8 is bored, and that for all x_8, if x_8 were bored, then x_8 is a poet we can infer that for all x_8, if x_8 were a mechanic, then x_8 is a poet via universal transitivity. Finally, from the fact that for all x_8, if x_8 were a mechanic, then x_8 is a poet we can infer that if John were a mechanic, then John is a poet via universal instantiation. Therefore, the answer is yes.