Consider the following premises. For all x_7, if x_7 were an artist, then x_7 is not a sailor. For all x_7, x_7 is an artist or x_7 is a carpenter. For all x_7, x_7 is a sailor and x_7 is a lawyer. Can we infer the following from them? There is at least one x_7 for which x_7 is not a carpenter.
 From the fact that for all x_7, x_7 is a sailor and x_7 is a lawyer we can infer that for all x_7, x_7 is a sailor. From the fact that for all x_7, if x_7 were an artist, then x_7 is not a sailor, and that for all x_7, x_7 is a sailor we can infer that for all x_7, x_7 is not an artist. Finally, from the fact that for all x_7, x_7 is an artist or x_7 is a carpenter, and that for all x_7, x_7 is not an artist we can infer that for all x_7, x_7 is a carpenter, which contradicts that There is at least one x_7 for which x_7 is not a carpenter. Therefore, the answer is no.