What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_7, x_7 will work or x_7 will play tennis. For all x_7, x_7 will write a letter or x_7 will not play tennis. For all x_7, if x_7 cooks, then x_7 is writing a letter. There is at least one x_7 for which x_7 will not work or x_7 will cook.
There is at least one x_7 for which x_7 will play tennis or x_7 will cook. For all x_7, if x_7 plays tennis, then x_7 is writing a letter.