What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_13, if x_13 climbs a mountain, then x_13 is drinking water. It is not cloudy or Jennifer is climbing a mountain. Charles is a server if and only if Jennifer is drinking water. It is cloudy or Charles is a server.
Charles is a server or Jennifer is climbing a mountain. If Jennifer were a writer, then it is not cloudy. If Charles were a server, then Jennifer is drinking water. If Jennifer drinks water, then Charles is a server.