What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_4, if x_4 writes a letter, then x_4 is poor. For all x_4, x_4 will cook or x_4 will write a letter. For all x_4, if x_4 cooks, then x_4 is poor. There is at least one x_4 for which if x_4 makes tea, then x_4 is not poor.
For all x_4, x_4 is poor.