Consider the following premises. For all x_11, x_11 will sleep or x_11 will not make tea. For all x_11, x_11 will make tea if and only if x_11 will sleep. Can we infer the following from them? If we can, name the inference rule being used: The fact that Jennifer makes tea does not imply that Jennifer is sleeping.
That contradicts the premises. Therefore the answer is no.