What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_6, if x_6 sleeps, then x_6 is climbing a mountain. For all x_6, if x_6 climbs a mountain, then x_6 is reading a book. For all x_6, if x_6 plays squash, then x_6 is reading a book. There is at least one x_6 for which x_6 will sleep.
There is at least one x_6 for which x_6 will climb a mountain. For all x_6, if x_6 sleeps, then x_6 is reading a book.