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 y, if y writes a letter, then y is an electrician. For all y, y will write a letter and y will listen to a song.
For all y, y will write a letter can be inferred via the universal simplification rule. For all y, y will listen to a song can be inferred via the universal simplification rule.