In the context of the input sentence, determine the relationship between 'Hachette' and 'Book'.
Options: owned by, product/material produced, manufacturer, subsidiary

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