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

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