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: Some lawyers are bartenders. For all x_6, if x_6 cooks, then x_6 is not a lawyer.
There is at least one x_6 for which x_6 is a lawyer can be inferred via the existential simplification rule. There is at least one x_6 for which x_6 is a bartender can be inferred via the existential simplification rule.