What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_11, if x_11 reads a book, then x_11 is excited. For all x_11, if x_11 were a sailor, then x_11 is excited. For all x_11, x_11 is a sailor or x_11 will work. For all x_11, x_11 will work if and only if x_11 is an office clerk. For all x_11, if x_11 were an office clerk, then x_11 is reading a book.
For all x_11, if x_11 were an office clerk, then x_11 is excited. For all x_11, if x_11 works, then x_11 is an office clerk. For all x_11, if x_11 were an office clerk, then x_11 is working.