What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_11, if x_11 were bored, then x_11 is excited. There is at least one x_11 for which if x_11 were excited, then x_11 is bored. For all x_11, if x_11 were a carpenter, then x_11 is an office clerk. For all x_11, if x_11 were an office clerk, then x_11 is bored.
For all x_11, if x_11 were a carpenter, then x_11 is bored. For all x_11, if x_11 were an office clerk, then x_11 is excited. There is at least one x_11 for which x_11 is excited if and only if x_11 is bored. There is at least one x_11 for which x_11 is bored if and only if x_11 is excited.