Utilize the input text as a context reference, choose the right relationship between Mattel and Barbie 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.

After surveying more than 1,000 women, including moms, Piper Jaffray said it believes that there is improving sentiment among moms for key Mattel brands, including Fisher-Price, Barbie and Disney Princesses.

Answer: owner_of