What is the relationship between department store chain and retail 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.

And the same thing with Mervyns way back when, where there was a department store chain that needed a turnaround at the opco level, but equally important was a turnaround at the propco level, and that's where we were involved, taking closed stores and converting them into other retail uses or other mixed uses.

Answer: industry