Refer to the input text as context and select the correct relationship between 'Hachette' and 'Book' from the available options.
Options: subsidiary, owned by, product/material produced, manufacturer

The publishers that the Justice Department said conspired with Apple include Lagardere SCA's Hachette Book Group Inc, News Corp's HarperCollins Publishers LLC, Penguin Group Inc, CBS Corp's Simon & Schuster Inc and Verlagsgruppe Georg von Holtzbrinck GmbH's Macmillan.
product/material produced