Consider the following premises. Elisabeth is a server if and only if Susan is playing tennis. Susan is playing tennis if and only if Robert is reading a book. For all z_1, z_1 will climb a mountain if and only if z_1 will read a book. Robert is not climbing a mountain. Can we infer the following from them? If we can, name the inference rule being used: Elisabeth is playing squash.
We cannot infer that from the premises. Therefore the answer is no.