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_1, if x_1 goes running, then x_1 is reading a book. For all x_1, if x_1 makes tea, then x_1 is running. There is at least one x_1 for which x_1 will not read a book.
There is at least one x_1 for which x_1 will not go running can be inferred via the existential modus tollens rule. For all x_1, if x_1 makes tea, then x_1 is reading a book can be inferred via the universal transitivity rule.