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 will read a book and x is an artist.
There is at least one x for which x will read a book can be inferred via the existential simplification rule. There is at least one x for which x is an artist can be inferred via the existential simplification rule.