What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? If Susan were sad, then Susan is drinking water. For all x_10, x_10 will drink water if and only if x_10 is sad.
For all x_10, if x_10 drinks water, then x_10 is sad. For all x_10, if x_10 were sad, then x_10 is drinking water.