What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_3, if x_3 were happy, then x_3 is bored. There is at least one x_3 for which if x_3 plays squash, then x_3 is happy. For all x_3, if x_3 were bored, then x_3 is playing squash.
For all x_3, if x_3 were happy, then x_3 is playing squash. There is at least one x_3 for which if x_3 plays squash, then x_3 is bored. There is at least one x_3 for which if x_3 were bored, then x_3 is happy.