There's a triceratops and a wolverine. What are they doing together? You'd think they'd fight, but they took their battle to another venue... they're competing in a game show! One of them answers a question, and the host says, "Success! You're correct!"
When we need to remember the reading とう, we use the Japanese city Tokyo. The last question in the game show match is the following: "What is the capital of Japan." The triceratops and the wolverine scream the correct answer at the same time: とうきょう!