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_6, if x_6 were curious, then x_6 is sleeping. There is at least one x_6 for which x_6 is curious. For all x_6, x_6 will not sleep or x_6 will go running.
There is at least one x_6 for which x_6 will sleep can be inferred via the existential modus ponens rule.