Utilize the input text as a context reference, choose the right relationship between 'Phosagro' and 'MOSCOW' from the options.
Options: owned by, director/manager, platform, headquarters location

MOSCOW Aug 3 Russian fertiliser producer Phosagro said on Monday that its agent Citigroup Global Markets Deutschland had reopened a facility that allows conversions between Phosagro's global depositary receipts (GDRs) and ordinary shares.
headquarters location