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 makes the blue lagoon in iceland blue?" whose answer is The silicate minerals.
Each document should contain about 30 words, and these documents should contain useful information.

Query: why does the blue lagoon look blue iceland
Useful Output:

Doc 1: That's because of the silica in the water, a white compound made up of the most common elements on earth – silicon and oxygen. The blue colour
Doc 2: The water to the Blue Lagoon is supplied from the Svartsengi Geothermal Power Station and is a milky shade of blue due to the silica, a white
Doc 3: While it looks blue, the water is actually white. The sun simply makes it look blue! In total, we stayed about 2h30 there. Once you get inside,
Doc 4: The water from the Blue Lagoon is a direct result of the geothermal plant found right next door. Visitors to the massive spa complex may not
Doc 5: The water in the Blue Lagoon is unique due to its rich content of silica, algae, and minerals, giving the lagoon its famous milky blue