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, x_11 will not cook. For all x_11, x_11 will cook if and only if x_11 is a taxi driver. There is at least one x_11 for which x_11 is a taxi driver if and only if x_11 is a police officer. For all x_11, x_11 is a police officer or x_11 will listen to a song.
For all x_11, if x_11 cooks, then x_11 is a taxi driver. There is at least one x_11 for which if x_11 were a taxi driver, then x_11 is a police officer. For all x_11, if x_11 were a taxi driver, then x_11 is cooking. There is at least one x_11 for which if x_11 were a police officer, then x_11 is a taxi driver. For all x_11, x_11 is not a taxi driver.