Consider the following premises. For all x_6, x_6 is not a sailor or x_6 will climb a mountain. For all x_6, x_6 is a sailor or x_6 is an office clerk. For all x_6, x_6 is not an office clerk. Can we infer the following from them? If we can, name the inference rule being used: Richard is cooking.
We cannot infer that from the premises. Therefore the answer is no.