What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_5, if x_5 were curious, then x_5 is a poet. For all x_5, if x_5 were a poet, then x_5 is an astronaut. For all x_5, if x_5 were a poet, then x_5 is curious.
For all x_5, if x_5 were curious, then x_5 is an astronaut. For all x_5, x_5 is curious if and only if x_5 is a poet. For all x_5, x_5 is a poet if and only if x_5 is curious.