What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one x_10 for which if x_10 writes a letter, then x_10 is curious. For all x_10, x_10 will read a book. For all x_10, if x_10 reads a book, then x_10 is curious.
For all x_10, x_10 is curious.