Consider the following premises. For all y_3, y_3 will make tea if and only if y_3 is a carpenter. For all z, z will make tea. Can we infer the following from them? Elisabeth is not a carpenter.
 From the fact that for all z, z will make tea we can infer that Elisabeth is making tea. From the fact that for all y_3, y_3 will make tea if and only if y_3 is a carpenter we can infer that Elisabeth is making tea if and only if Elisabeth is a carpenter. From the fact that Elisabeth is making tea if and only if Elisabeth is a carpenter we can infer that if Elisabeth makes tea, then Elisabeth is a carpenter. Finally, from the fact that if Elisabeth makes tea, then Elisabeth is a carpenter, and that Elisabeth is making tea we can infer that Elisabeth is a carpenter, which contradicts that Elisabeth is not a carpenter. Therefore, the answer is no.