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, if x_8 were a sailor, then x_8 is fast. For all x_8, if x_8 were a mechanic, then x_8 is fast. For all x_8, x_8 is a carpenter. For all x_8, x_8 is a sailor or x_8 is a mechanic. For all x_8, if x_8 were a carpenter, then x_8 is making tea.
For all x_8, x_8 will make tea can be inferred via the universal modus ponens rule. For all x_8, x_8 is fast can be inferred via the universal disjunction elimination rule.