What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_1, x_1 will take a plane or x_1 is a poet. For all x_1, if x_1 were a poet, then x_1 is an astronaut. There is at least one x_1 for which x_1 will not take a plane or x_1 will climb a mountain. For all x_1, x_1 is not an astronaut. For all x_1, if x_1 were an astronaut, then x_1 is a poet. For all x_1, x_1 is bored.
For all x_1, x_1 is not a poet. There is at least one x_1 for which x_1 is a poet or x_1 will climb a mountain. For all x_1, x_1 is a poet if and only if x_1 is an astronaut. For all x_1, x_1 is an astronaut if and only if x_1 is a poet.