In the context of the input sentence, determine the relationship between 'Sears Canada' and 'retail'.
Options: currency, operator, industry, product/material produced

Tickers to Watch: Barnes & Noble Inc. BKS, +0.97% as it prepares to split up its business, said Sears Canada Inc. SCC, -1.32% Chief Executive Ronald D. Boire will lead its retail business , while current Chief Executive Michael P. Huseby will become executive chairman of its college books spinoff.
industry