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 is the green house made out of?" whose answer is transparent material.
Each document should contain about 30 words, and these documents should contain useful information.

Query: materials of greenhouses
Useful Output:

Doc 1: The most common materials used for greenhouses are polythene film and polycarbonate. However, one can even use glass for their greenhouse. But
Doc 2: Glazing Materials: Letting the Light Shine In · Glass: Traditional greenhouse glazing, glass offers excellent light transmission and clarity.
Doc 3: The following materials commonly used to build frames for greenhouse are Wood, Bamboo, Steel, Galvanized iron pipe, Aluminium and Reinforced concrete (RCC).
Doc 4: Commonly used greenhouse insulation materials include thermal blankets, rigid foam panels, bubble wrap, and insulating curtains. These materials
Doc 5: Consider various types of glass, polycarbonate, greenhouse plastic poly film on rolls, or other materials. Each choice will have its own pros and cons.