Utilize the input text as a context reference, choose the right relationship between Boston Pizza and restaurant from the options. Options: 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.

The decline in same restaurant sales year-to-date was principally due to declines in restaurant guest traffic and the temporary closure of all dining rooms and sports bars in the Boston Pizza restaurants across Canada on March 17, 2020, again both as a result of the COVID pandemic but partially offset by the increased takeout and delivery sales that I mentioned a moment ago.

Answer: product_or_material_produced