What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If it is late, then John is a poet. Jessica is a soldier if and only if it is late. Sarah is not running. John is a poet if and only if Sarah is running.
If Jessica were a soldier, then it is late. If John were a poet, then Sarah is running. If it is late, then Jessica is a soldier. If Sarah goes running, then John is a poet. John is not a poet.