Utilize the input text as a context reference, choose the right relationship between 'Singtel' and 'Singapore' from the options.
Options: member of, director/manager, product/material produced, headquarters location

Three months later, it struck a series of global partnerships with the likes of U.S. company Equinix and Singapore telecoms giant Singtel , allowing it to use existing data centers built by its partners to push its own services.
headquarters location