Utilize the input text as a context reference, choose the right relationship between 'Samsung' and 'Seoul' from the options.
Options: developer, owner of, location of formation, founded by

Cho Min-kyung, a Seoul office worker who recently tried out Samsung Pay through her Galaxy S6 phone, said the service was convenient because it cuts out the hassle of having to carry around both her wallet and phone every time she heads out.
location of formation