What is the relationship between Monster Beverage and energy drink 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.

Then, after the closing bell, energy drink manufacturer Monster Beverage , oil giant Petrobras , entertainment company Lions Gate Entertainment , and Overstock.com are all reporting their numbers as well.

Answer: product_or_material_produced