What is the relationship between Lehman Brothers and investment bank 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.

In 2009, a year after the collapse of investment bank Lehman Brothers and with the economy already in the depths of an historic, deep recession, economists were predicting the Fed would hike rates as early as the first quarter of 2010.

Answer: product_or_material_produced