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: "who appoints the chairman of union public service commission?" whose answer is the President.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who appoints the chairman of union public service commission
Useful Output:

Doc 1: Key Points. The President of India appoints the chairman of the Union Public Service Commission. UPSC comprises a chairman and ten members.
Doc 2: According to Article 316 of the Indian Constitution, the Chairman and other members of the UPSC are appointed by the President of India.
Doc 3: UPSC Chairman Overview ; Appointed by. President of India ; Tenure of UPSC Chairman. 6 years (or 65 years) ; Eligibility of UPSC Chairman. An
Doc 4: 1. Is appointed by the President of India. 2. Is ineligible for re-appointment to that office. 3. Holds office for a period of 6 years or till the age of 60
Doc 5: Appointment of Members: The Chairman and other members of the UPSC are appointed by the President of India. Term of Office: Any member of the