What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_8, x_8 is not a poet. For all x_8, x_8 will read a book if and only if x_8 is a poet. For all x_8, x_8 will listen to a song if and only if x_8 will read a book. For all x_8, x_8 is fast if and only if x_8 will listen to a song.
For all x_8, if x_8 reads a book, then x_8 is a poet. For all x_8, if x_8 listens to a song, then x_8 is reading a book. For all x_8, if x_8 were fast, then x_8 is listening to a song. For all x_8, if x_8 were a poet, then x_8 is reading a book. For all x_8, if x_8 reads a book, then x_8 is listening to a song. For all x_8, if x_8 listens to a song, then x_8 is fast. For all x_8, x_8 will not read a book.