What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x, x is a bartender. There is at least one x for which x is sad. For all x, x will take a plane.
For all x, x is a bartender and x will take a plane. For all x, x will take a plane and x is a bartender. There is at least one x for which x is sad and x is a bartender. There is at least one x for which x is sad and x will take a plane. There is at least one x for which x is a bartender and x is sad. There is at least one x for which x will take a plane and x is sad.