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 are the clouds in the milky way?" whose answer is galaxies.
Each document should contain about 30 words, and these documents should contain useful information.

Query: types of interstellar clouds in the milky way
Useful Output:

Doc 1: Interstellar clouds do not last for the lifetime of the universe. Instead, they are like clouds on Earth, constantly shifting, merging with each
Doc 2: W3, one of the 25 Milky Way regions the Hydrides in the Galaxy project will study, is seen as the glowing white area in the upper right of this
Doc 3: The advance not only reveals the true structure of the Musca cloud, but it could also lead to a better understanding of the evolution of
Doc 4: An interstellar cloud and a molecular cloud are both types of clouds found in the interstellar medium, the vast space between stars in a galaxy.
Doc 5: Classes of nebulae. All nebulae observed in the Milky Way Galaxy are forms of interstellar matter—namely, the gas between the stars that is