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 san francisco international airport built?" whose answer is 1931.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when was the san francisco international airport built
Useful Output:

Doc 1: The terminal was dedicated in August 1954, and passenger operations began on September 1.
Doc 2: Airport celebrates May 7, 1927 commissioning date with 4K video retrospective. SAN FRANCISCO – May 8, 2017 – the San Francisco International
Doc 3: Out with the Old 🛠️ In with the Awesome Terminal 3 Construction Updates ✈️ T3 is getting a makeover! 🏗️ Starting at 4:00 a.m. Wednesday, March 12th
Doc 4: San Francisco International Airport (SFO IATA ) is the main international airport of the San Francisco Bay Area in California.
Doc 5: San Francisco Bay Area. Location, Unincorporated San Mateo County, California, U.S.. Opened, March 15, 1927 (before the airport opened) May 7, 1927. Hub for.