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 play tennis. For all x_6, if x_6 reads a book, then x_6 is not playing tennis. For all x_6, x_6 is a taxi driver or x_6 will read a book. For all x_6, x_6 is not a taxi driver or x_6 is a writer.
For all x_6, x_6 will not read a book. For all x_6, x_6 will read a book or x_6 is a writer.