What is the relationship between Boston Pizza and restaurant 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.

The medium and long-term impact on The Fund and BPI will depend on the ability of Boston Pizza to build its business back to normal operating levels as well as mitigate the number of permanent restaurant closures.

Answer: product_or_material_produced