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_16, x_16 is curious. For all x_16, x_16 is fast and x_16 will write a letter. There is at least one x_16 for which x_16 is a soldier.
For all x_16, x_16 is fast can be inferred via the universal simplification rule. For all x_16, x_16 will write a letter can be inferred via the universal simplification rule. There is at least one x_16 for which x_16 is a soldier and x_16 is curious can be inferred via the existential conjunction rule. There is at least one x_16 for which x_16 is curious and x_16 is a soldier can be inferred via the existential conjunction rule.