What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Michael is fast or it is sunny. Michael is not a carpenter. For all y, if y were fast, then y is a carpenter. For all y, if y were a carpenter, then y is fast.
For all y, y is fast if and only if y is a carpenter. For all y, y is a carpenter if and only if y is fast.