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: "what year did seat belts come out in australia?" whose answer is 1971.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when were seat belts first required in australia
Useful Output:

Doc 1: And whilst Western Australians are being applauded for their compliance in the 50th year of seatbelt legislation in the state, our research
Doc 2: Seatbelts were not mandatory in Australia until 1970. It was then that Victoria became the first state to introduce a law making seatbelt use compulsory.
Doc 3: Mandatory seatbelts became law in Victoria in 1970. And by 1972, every state made wearing seatbelts in the front seat compulsory. But the laws
Doc 4: On 1 January 1972, Australia became the first country worldwide to legislate for compulsory seatbelt wearing in front and back seats.
Doc 5: In 1970 the Victorian state government became the first in the western world to introduce legislation for compulsory wearing of seat belts.