What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_7, x_7 is not rich. For all x_7, x_7 is not a mechanic or x_7 is a musician. There is at least one x_7 for which x_7 is rich or x_7 is a mechanic.
There is at least one x_7 for which x_7 is a mechanic.