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: "Agnes of Austria was a member of the house that ruled the Holy Roman Empire beginning in what year?" whose answer is 1438.
Each document should contain about 30 words, and these documents should contain useful information.

Query: start of Habsburg rule in the Holy Roman Empire
Useful Output:

Doc 1: The kingdom was under Habsburg rule at the time: next to being emperor, the Habsburgs were also simultaneously kings of Bohemia. In 1618, the
Doc 2: Frederick V, senior representative of the Inner Austrian line, was elected German king in 1440 and crowned Holy Roman emperor, as Frederick III,
Doc 3: By the late 15th century, Frederick III and Maximilian I had established Habsburg rule on the Burgundian, Spanish, and Hungarian seats of power.
Doc 4: During the seventeenth century, the Habsburg Monarch Philip IV of Spain ruled over much of Western Europe as well as the New World.
Doc 5: However, the emperor title back before 1804 came from the fact that the ruling Habsburg was almost always simultaneously the elected head of an