Consider the following premises. For all x_24, x_24 will play squash or x_24 is an artist. For all x_24, if x_24 were an artist, then x_24 is taking a plane. For all x_24, if x_24 plays squash, then x_24 is taking a plane. William is an office clerk. Can we infer the following from them? If we can, name the inference rule being used: William is not an office clerk.
That contradicts the premises. Therefore the answer is no.