What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_3, x_3 is poor if and only if x_3 will listen to a song. If it snows, then Sarah is poor. If Sarah listens to a song, then it is snowing.
If Sarah listens to a song, then Sarah is poor. For all x_3, if x_3 were poor, then x_3 is listening to a song. For all x_3, if x_3 listens to a song, then x_3 is poor.