Utilize the input text as a context reference, choose the right relationship between eurozone and euro 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.

BRUSSELS: Greece on Sunday faced a final EU summit to clinch a deal that would stop Athens crashing out of the euro after divided eurozone ministers halted "very difficult" talks on a new bailout overnight.

Answer: currency