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_2 for which if x_2 works, then x_2 is an electrician. For all x_2, x_2 will work if and only if x_2 is an electrician. For all x_2, if x_2 works, then x_2 is reading a book. For all x_2, x_2 will not read a book. For all x_2, if x_2 reads a book, then x_2 is working.
For all x_2, x_2 will not work. There is at least one x_2 for which if x_2 reads a book, then x_2 is an electrician. For all x_2, x_2 will work if and only if x_2 will read a book. For all x_2, x_2 will read a book if and only if x_2 will work. For all x_2, if x_2 works, then x_2 is an electrician. For all x_2, if x_2 were an electrician, then x_2 is working.