| Vowel | Capital | % Correct |
|---|---|---|
| O | OSLO, Norway | 81%
|
| O | LONDON, United Kingdom | 68%
|
| A | ANKARA, Turkey | 65%
|
| O | MOSCOW, Russia | 61%
|
| A | ACCRA, Ghana | 58%
|
| I | DILI, East Timor | 58%
|
| A | ASTANA, Kazakhstan | 55%
|
| O | TOKYO, Japan | 55%
|
| A | HAVANA, Cuba | 52%
|
| A | CARACAS, Venezuela | 51%
|
| A | JAKARTA, Indonesia | 51%
|
| A | AMMAN, Jordan | 49%
|
| A | RABAT, Morocco | 49%
|
| A | ASMARA, Eritrea | 48%
|
| A | BAGHDAD, Iraq | 48%
|
| A | SANA'A, Yemen | 45%
|
| A | ASHGABAT, Turkmenistan | 43%
|
| A | KAMPALA, Uganda | 43%
|
| A | MANAMA, Bahrain | 43%
|
| O | STOCKHOLM, Sweden | 43%
|
| A | DAKAR, Senegal | 42%
|
| A | LA PAZ, Bolivia (administrative capital) | 42%
|
| A | DHAKA, Bangladesh | 39%
|
| I | TBILISI, Georgia | 39%
|
| A | WARSAW, Poland | 39%
|
| O | PORTO-NOVO, Benin | 26%
|
| A | TARAWA, Kiribati | 26%
|