Free Dictionary don't agree with you, and I can see why - Parliament is located 9 km / 5 miles from downtown Colombo in the suburb of Sri Jayewardenepura Kotte, which in my book (and theirs) makes Colombo the capital. However, although SJK is simply a part of Colombo's urban area, the question already accepts several spelling variations of Sri Jayewardenepura Kotte as well, and we'll add Sri Kotte to that list.
Lonely Planet and
Free Dictionary don't agree with you, and I can see why - Parliament is located 9 km / 5 miles from downtown Colombo in the suburb of Sri Jayewardenepura Kotte, which in my book (and theirs) makes Colombo the capital. However, although SJK is simply a part of Colombo's urban area, the question already accepts several spelling variations of Sri Jayewardenepura Kotte as well, and we'll add Sri Kotte to that list.