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: Charles is curious. For all x_10, if x_10 makes tea, then x_10 is an office clerk. For all x_10, x_10 will make tea.
There is at least one x for which x is curious can be inferred via the existential generalization rule. For all x_10, x_10 is an office clerk can be inferred via the universal modus ponens rule.