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: Linda is not rich or John is running. For all x_7, x_7 is a carpenter or x_7 is rich. For all x_7, x_7 is not a carpenter.
For all x_7, x_7 is rich can be inferred via the universal disjunctive syllogism rule.