What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_9, x_9 will write a letter and x_9 is a server. There is at least one x_9 for which x_9 is not fast. For all x_9, x_9 is fast or x_9 will climb a mountain.
There is at least one x_9 for which x_9 will climb a mountain. For all x_9, x_9 will write a letter. For all x_9, x_9 is a server.