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, x_6 will drink water if and only if x_6 is sad. For all x_6, x_6 will not read a book or x_6 will drink water. For all x_6, if x_6 were an astronaut, then x_6 is sad. There is at least one x_6 for which x_6 will read a book or x_6 is an astronaut.
There is at least one x_6 for which x_6 is an astronaut or x_6 will drink water. For all x_6, if x_6 drinks water, then x_6 is sad. For all x_6, if x_6 were sad, then x_6 is drinking water.