What is the relationship between Metro and restaurant 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.

German retailer Metro AG has bought Singapore-based restaurant supplier Classic Fine Foods Group from private equity group EQT for $290 million, it said on Thursday as it reported a slowdown in same-store sales due to a shift in Easter.

Answer: industry