What is the relationship between Mattel and doll in the context of the input sentence. Choose an answer from: 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.

Mattel Inc. said Thursday it swung to a loss in its second quarter, though the toy maker posted a surprise profit on an adjusted basis, as sales in the iconic Barbie doll line declined for a sixth-straight quarter.

Answer: product_or_material_produced