What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Jennifer is not excited. Jennifer is playing tennis if and only if Richard is cooking. For all x_7, x_7 will play tennis if and only if x_7 is excited.
If Jennifer plays tennis, then Richard is cooking. If Richard cooks, then Jennifer is playing tennis. For all x_7, if x_7 plays tennis, then x_7 is excited. For all x_7, if x_7 were excited, then x_7 is playing tennis.