What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_17, x_17 is a politician. For all x_17, x_17 is a mechanic or x_17 is not a politician. For all x_17, if x_17 were an electrician, then x_17 is a mechanic.
For all x_17, if x_17 were a politician, then x_17 is a mechanic.