What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_9, x_9 will not write a letter. There is at least one x_9 for which x_9 will listen to a song if and only if x_9 will cook. For all x_9, if x_9 were curious, then x_9 is listening to a song. For all x_9, x_9 will write a letter or x_9 will cook.
For all x_9, x_9 will cook. There is at least one x_9 for which if x_9 listens to a song, then x_9 is cooking. There is at least one x_9 for which if x_9 cooks, then x_9 is listening to a song.