What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_8, x_8 is not a mechanic. For all x_8, x_8 will drink water if and only if x_8 is a mechanic. There is at least one x_8 for which x_8 is a scientist. For all x_8, x_8 will drink water or x_8 is a lawyer.
For all x_8, if x_8 drinks water, then x_8 is a mechanic. For all x_8, if x_8 were a mechanic, then x_8 is drinking water. For all x_8, x_8 will not drink water.