You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "what year is the movie mulan set in?" whose answer is during the Han dynasty.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when is the movie Mulan set
Useful Output:

Doc 1: The story of Mulan comes from an ancient Chinese poem called the Ballad of Mulan, which is set in the Northern Wei Dynasty, between 386 to 534 AD.
Doc 2: The live-action “Mulan” takes place during the Northern Wei Dynasty in 4th to 6th century AD ,although not all costume or set design is
Doc 3: Mulan is a national heroine in ancient Chinese legend. Legends of her date back to the Northern Wei dynasty, as early as around 380AD. Think
Doc 4: Hua Mulan's story is told in the Ballad of Mulan, a story set in the North and South dynasties, which was between 420 and 589 CE. While it's
Doc 5: The 1998 “Mulan” takes this even further by showing Yao, Ling and Chien-Po's personal growth from hyperfixating on masculinity to valuing