Utilize the input text as a context reference, choose the right relationship between Entergy Louisiana and Entergy from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

Entergy Arkansas and Entergy Louisiana each filed their annual formula rate plans and requested extensions of these mechanisms.

Answer: parent_organization