What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_5, if x_5 were happy, then x_5 is a writer. For all x_5, if x_5 makes tea, then x_5 is cooking. There is at least one x_5 for which x_5 will work or x_5 is happy. For all x_5, if x_5 were a writer, then x_5 is cooking. For all x_5, if x_5 works, then x_5 is making tea.
For all x_5, if x_5 were happy, then x_5 is cooking. For all x_5, if x_5 works, then x_5 is cooking.