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 for which if x writes a letter, then x is bored. For all x, if x were bored, then x is writing a letter. For all x, if x makes tea, then x is bored. For all x, if x were bored, then x is making tea.
For all x, if x makes tea, then x is writing a letter. There is at least one x for which if x writes a letter, then x is making tea. For all x, x will make tea if and only if x is bored. For all x, x is bored if and only if x will make tea. There is at least one x for which x will write a letter if and only if x is bored. There is at least one x for which x is bored if and only if x will write a letter.