What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_12, if x_12 were sad, then x_12 is cooking. For all x_12, x_12 will write a letter and x_12 is curious. There is at least one x_12 for which if x_12 plays squash, then x_12 is cooking. For all x_12, x_12 will play squash or x_12 is sad.
For all x_12, x_12 will write a letter. For all x_12, x_12 is curious. There is at least one x_12 for which x_12 will cook.