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_7, x_7 will write a letter and x_7 will make tea. For all x_7, if x_7 writes a letter, then x_7 is an electrician.
For all x_7, x_7 will write a letter can be inferred via the universal simplification rule. For all x_7, x_7 will make tea can be inferred via the universal simplification rule.