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: "when was the first pakistani postal stamp issued?" whose answer is 1 October 1947.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when was the first pakistani postal stamp issued
Useful Output:

Doc 1: 1955 World Wide Event Covers FDC Eighth Anniversary Independence Pakistan 030C · 1955 World Wide Event Covers FDC Eighth Anniversary Independence Pakistan 029C.
Doc 2: [MCQ] When was the first Pakistani Postal Stamp issued 1.August 1948 2.December 1947 3.February 1948 4.July 1948.
Doc 3: Among these 11 stamps issued last year, the first stamp of this year was issued on January, 01, 2022 to commemorate the 70th anniversary of the
Doc 4: The postage stamp first came to the subcontinent in 1852, when the Commissioner of Sind, Sir Bartel Frere, introduced paper stamps, which came
Doc 5: The first FDCs of Pakistan came much later in July 1948, when the country issued its very first set of four commemorative stamps.