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: "calcutta is situated on the banks of which river?" whose answer is The Hooghly River.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Calcutta river
Useful Output:

Doc 1: The Hooghly River branches off from its parent river the Ganges, that flows from the Himalayas. It has a great religious and economical
Doc 2: Fundamental to life in Kolkata, the Hooghly River (also known as the Hugli River) is a distributary or channel of the holy Ganga or Ganges River
Doc 3: Find the perfect calcutta river hooghly black & white image. Huge collection, amazing choice, 100+ million high quality, affordable RF and RM images.
Doc 4: Kolkata (formerly known as Calcutta) is situated on the bank of the Hooghly River, a distributary of the Ganges River. The Hooghly River flows
Doc 5: We head to Calcutta, India to visit 'The Baan' – a tidal bore that runs through the Hooghly River in West Bengal.