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: "Lower Swineshaw Reservoir is operated by which largest listed water company in the UK?" whose answer is United Utilities.
Each document should contain about 30 words, and these documents should contain useful information.

Query: largest listed water company in the UK
Useful Output:

Doc 1: Thames Water — the UK's largest water company, which is teetering on the brink of insolvency and is trying to stave off temporary
Doc 2: The UK water sector is very much in the public eye. The sector has only three listed companies – Pennon (PNN), United Utilities (UU.) and Severn Trent (SVT).
Doc 3: United Utilities is the largest listed water company in the UK by market capitalisation. It was founded in 1995 following the merger of North
Doc 4: Severn Trent (UK). (FY ending 3/31/2010). Water supply and sewage. 2,547. 6. Thames Water (UK). (FY ending 3/31/2010). Water supply and
Doc 5: Top water stocks in the UK · Severn Trent · United Utilities · Pennon.