What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: For all x_7, x_7 will climb a mountain or x_7 will play tennis. For all x_7, if x_7 makes tea, then x_7 is an office clerk. There is at least one x_7 for which if x_7 were bored, then x_7 is making tea. For all x_7, if x_7 plays tennis, then x_7 is an office clerk. For all x_7, x_7 will not climb a mountain or x_7 is bored.
There is at least one x_7 for which if x_7 were bored, then x_7 is an office clerk can be inferred via the existential transitivity rule. For all x_7, x_7 will play tennis or x_7 is bored can be inferred via the universal resolution rule.