What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: There is at least one x for which x is not an astronaut or x will play squash. For all x, x is an astronaut or x will drink water.
There is at least one x for which x will drink water or x will play squash can be inferred via the existential resolution rule.