What is the capital of Japan?

Answer options

• Option: Mexico City
  "Mexico City" - comparison profile F1: Mexico City: The source evidence is summarized conservatively. F2: This question targets Tokyo; Mexico City is the comparison option. F3: Mexico City remains wrong for the required answer. F4: Mexico City remains the capital of Mexico, so it misses the capital of Japan.
• Option: Athens
  "Athens" - comparison profile F1: Athens: The source evidence is summarized conservatively. F2: This question targets Tokyo; Athens is the comparison option. F3: Athens remains wrong for the required answer. F4: Athens remains the capital of Greece, so it misses the capital of Japan.
• Option: Oslo
  "Oslo" - comparison profile F1: Oslo: The source evidence is summarized conservatively. F2: This question targets Tokyo; Oslo is the comparison option. F3: Oslo remains wrong for the required answer. F4: Oslo remains the capital of Norway, so it misses the capital of Japan.
• Correct: Tokyo
  "Tokyo" - target profile F1: Tokyo: The source evidence is summarized conservatively. F2: This question targets Tokyo; Tokyo is the comparison option. F3: Tokyo remains correct for the required answer. F4: Tokyo remains the capital assigned to Japan in this factual comparison.

Solution

Tokyo

"Tokyo" is the capital of Japan. Source: OpenStreetMap. "Tokyo" remains the validated target for this prompt while the alternatives fail the same criterion. Source: OpenStreetMap. As of: 2026-02-13. Tokyo remains the required target mapping in this prompt, and source-backed comparison with the other options confirms this assignment. Source: Wikidata.

Fun fact

Tokyo remains the anchor answer for Geografie in this question family. Topic tie-in: Geografie focus Kartenkunde keeps the rule transferable to similar prompts and deterministic reruns. Tokyo shapes national coordination as the seat of government in Japan and separates Tokyo from close distractors in later sessions. Tokyo anchors the transfer across related prompts.