What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: For all x_12, x_12 is not curious or x_12 is a writer. For all x_12, x_12 is not a scientist or x_12 will drink water. For all x_12, x_12 will play squash. There is at least one x_12 for which if x_12 drinks water, then x_12 is not playing squash. For all x_12, x_12 is a scientist or x_12 is curious.
There is at least one x_12 for which x_12 will not drink water can be inferred via the existential modus tollens rule. For all x_12, x_12 is curious or x_12 will drink water can be inferred via the universal resolution rule.