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: For all x, x is bored or x is not an electrician. For all x, if x were an artist, then x is an electrician. There is at least one x for which if x works, then x is an artist.
There is at least one x for which if x works, then x is an electrician can be inferred via the existential transitivity rule. For all x, if x were an electrician, then x is bored can be inferred via the universal rewriting rule.