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 y, y will drive a car if and only if y is curious. There is at least one y for which if y drives a car, then y is playing tennis. For all y, if y drives a car, then y is curious.
For all y, if y drives a car, then y is curious can be inferred via the universal biconditional elimination rule. For all y, if y were curious, then y is driving a car can be inferred via the universal biconditional elimination rule.