Consider the following premises. For all x_6, if x_6 were a musician, then x_6 is taking a plane. For all x_6, if x_6 were a bartender, then x_6 is a musician. Richard is a bartender. Can we infer the following from them? If we can, name the inference rule being used: For all x_6, if x_6 were a musician, then x_6 is taking a plane.
That is one of the premises. Therefore, the answer is yes.