Utilize the input text as a context reference, choose the right relationship between Pemex and MEXICO CITY 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.

REUTERS/Edgard Garrido MEXICO CITY (Reuters) - Mexican state oil company Pemex (PEMX.UL) reached a $295 million settlement with a group including German industrial conglomerate Siemens (SIEGn.DE) in a longstanding dispute over a refinery project, a person familiar with the matter said on Monday.

Answer: headquarters_location