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 y for which y is not rich or y is a carpenter. For all y, y is rich or y is poor. For all y, y is not poor or y will play squash.
There is at least one y for which y is poor or y is a carpenter can be inferred via the existential resolution rule.