Consider the following premises. For all x_7, x_7 is poor if and only if x_7 is a lawyer. Jennifer is not an artist. It is raining if and only if Jennifer is an artist. If Mary were a lawyer, then it is raining. Can we infer the following from them? Mary is not poor.
 From the fact that it is raining if and only if Jennifer is an artist, and that Jennifer is not an artist we can infer that it is not raining. From the fact that for all x_7, x_7 is poor if and only if x_7 is a lawyer we can infer that Mary is poor if and only if Mary is a lawyer. From the fact that if Mary were a lawyer, then it is raining, and that it is not raining we can infer that Mary is not a lawyer. Finally, from the fact that Mary is poor if and only if Mary is a lawyer, and that Mary is not a lawyer we can infer that Mary is not poor. Therefore, the answer is yes.