Utilize the input text as a context reference, choose the right relationship between Dentsu Aegis and Dentsu 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.

Andrew Ackah, will take the role of CEO for Dentsu Aegis Network in Ghana with responsibility for growing Dentsu Aegis Network’s business and presence locally.

Answer: parent_organization