What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_10, x_10 will make tea or x_10 will drink water. If Jennifer drinks water, then Sarah is fast. For all x_10, x_10 will not make tea or x_10 will write a letter. If Sarah were fast, then Richard is reading a book. If Jennifer writes a letter, then Richard is reading a book.
If Jennifer drinks water, then Richard is reading a book. For all x_10, x_10 will drink water or x_10 will write a letter.