Retail formats include 131 Shopko stores, providing quality name-brand merchandise, great values, pharmacy and optical services in small to mid-sized cities; 5 Shopko Express Rx stores, a convenient neighborhood drugstore concept; and 203 Shopko Hometown locations, a smaller concept store developed to meet the needs of smaller communities.
In the context of the input sentence, determine the relationship between 'Shopko' and 'Retail'.
Options: stock exchange, industry, headquarters location, publisher