In the context of the input sentence, determine the relationship between 'Saudia' and 'Riyadh'.
Options: brand, location of formation, platform, director/manager

Some routes are densely trafficked; for example, Saudia has 12 flights daily between the capital, Riyadh and the country’s commercial center, Jeddah, and frequently uses Boeing 777s for the 90-minute hop.
location of formation