What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_15, x_15 will cook if and only if x_15 will work. For all x_15, x_15 will not make tea. There is at least one x_15 for which x_15 will work if and only if x_15 will cook. For all x_15, if x_15 cooks, then x_15 is making tea.
For all x_15, x_15 will not cook. For all x_15, if x_15 cooks, then x_15 is working. There is at least one x_15 for which if x_15 works, then x_15 is cooking. For all x_15, if x_15 works, then x_15 is cooking. There is at least one x_15 for which if x_15 cooks, then x_15 is working.