When Edo became the capital of the Tokugawa shogunate, Asakusa began to flourish as an entertainment quarter.
Edo did not become the capital of the Tokugawa shogunate.
mnli hypothesis: Edo did not become the capital of the Tokugawa shogunate. premise: When Edo became the capital of the Tokugawa shogunate, Asakusa began to flourish as an entertainment quarter.