What is the relationship between Alcoa and aluminium 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.

Alcoa (NYSE: AA - news ) rose 2.98% after the aluminium giant unveiled plans to split into two separate companies, while Kellogg (Hamburg: 944624.HM - news ) slid 0.66% after saying it would buy Egypt-based Mass Food Group in a deal worth approximately $150m.
product_or_material_produced