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_8, x_8 is a musician. There is at least one x_8 for which x_8 will drink water and x_8 is happy.
There is at least one x_8 for which x_8 will drink water can be inferred via the existential simplification rule. There is at least one x_8 for which x_8 is happy can be inferred via the existential simplification rule.