What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? David is playing tennis. For all x_12, x_12 will climb a mountain. For all x_12, x_12 is a server.
For all x_12, x_12 will climb a mountain and x_12 is a server. For all x_12, x_12 is a server and x_12 will climb a mountain.