What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one x_5 for which x_5 will make tea if and only if x_5 will cook. For all x_5, x_5 will cook if and only if x_5 is fast. For all x_5, x_5 will not make tea.
For all x_5, if x_5 cooks, then x_5 is fast. There is at least one x_5 for which if x_5 makes tea, then x_5 is cooking. For all x_5, if x_5 were fast, then x_5 is cooking. There is at least one x_5 for which if x_5 cooks, then x_5 is making tea. There is at least one x_5 for which x_5 will not cook.