Consider the following premises. For all x_7, x_7 is a bartender if and only if x_7 is an artist. For all x_7, x_7 is a poet. There is at least one x_7 for which if x_7 plays squash, then x_7 is an artist. For all x_7, x_7 is not a poet or x_7 is a bartender. Can we infer the following from them? For all x_7, x_7 is not an artist.
 From the fact that for all x_7, x_7 is a bartender if and only if x_7 is an artist we can infer that for all x_7, if x_7 were a bartender, then x_7 is an artist. From the fact that for all x_7, x_7 is a poet we can infer that for all x_7, x_7 is a poet or x_7 will play squash. From the fact that for all x_7, x_7 is a poet or x_7 will play squash, and that for all x_7, x_7 is not a poet or x_7 is a bartender we can infer that for all x_7, x_7 will play squash or x_7 is a bartender. Finally, from the fact that there is at least one x_7 for which if x_7 plays squash, then x_7 is an artist, that for all x_7, if x_7 were a bartender, then x_7 is an artist, and that for all x_7, x_7 will play squash or x_7 is a bartender we can infer that there is at least one x_7 for which x_7 is an artist, which contradicts that For all x_7, x_7 is not an artist. Therefore, the answer is no.