What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_3, x_3 is a mechanic and x_3 will make tea. There is at least one x_3 for which x_3 will read a book.
For all x_3, x_3 is a mechanic. For all x_3, x_3 will make tea.