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, x_13 will drive a car or x_13 is a bartender. For all x_13, if x_13 were a bartender, then x_13 is a sailor. For all x_13, if x_13 drives a car, then x_13 is a sailor. If Elisabeth were a sailor, then it is cold.
For all x_13, x_13 is a sailor.