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, if x_7 were a mechanic, then x_7 is curious. There is at least one x_7 for which if x_7 were curious, then x_7 is drinking water. For all x_7, x_7 is a mechanic or x_7 is not a police officer.
There is at least one x_7 for which if x_7 were a mechanic, then x_7 is drinking water. For all x_7, if x_7 were a police officer, then x_7 is a mechanic.