What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_11, if x_11 were fast, then x_11 is reading a book. There is at least one x_11 for which x_11 will not read a book. For all x_11, if x_11 drives a car, then x_11 is not running. For all x_11, x_11 is fast or x_11 will go running.
There is at least one x_11 for which x_11 is not fast.