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: There is at least one x_14 for which if x_14 were an electrician, then x_14 is working. For all x_14, x_14 will play a game if and only if x_14 will work. For all x_14, x_14 will play a game.
For all x_14, if x_14 plays a game, then x_14 is working can be inferred via the universal biconditional elimination rule. For all x_14, if x_14 works, then x_14 is playing a game can be inferred via the universal biconditional elimination rule.