Consider the following premises. For all x_17, x_17 will not play a game. For all x_17, x_17 will sleep if and only if x_17 will play a game. It is late. For all x_17, x_17 will sleep or x_17 will climb a mountain. Can we infer the following from them? If we can, name the inference rule being used: If James climbs a mountain, then it is late.
We cannot infer that from the premises. Therefore the answer is no.