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: "where does cape towns water supply come from?" whose answer is Steenbras Dam.
Each document should contain about 30 words, and these documents should contain useful information.

Query: sources of cape town water supply
Useful Output:

Doc 1: To meet current and future challenges, this report calls on the city of Cape Town to strengthen integrated basin governance and capacities at all levels of
Doc 2: There are 44 dams in the Western Cape · Most of Cape Town's water comes from the Riviersonderend-Berg River Water Scheme, which makes up the
Doc 3: Cape Town sources about 95% of their water from the WCWSS, accounting for ~ 64% of the total WCWSS drinking water. The uses for the other WCWSS
Doc 4: Situated to the northeast of Cape Town, the Boland Mountains water source area is responsible for supplying the City of Cape Town with 97.1% of its water.
Doc 5: Out of which major water capacity is provided by 6 large dams – Berg River dam, Steenbras Lower, Steenbras Upper, Theewaterskloof dam, Voelvlei