Take context from the input text and decide on the accurate relationship between 'Saudia' and 'Riyadh' from the options provided.
Options: brand, director/manager, platform, location of formation

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