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 was the first year of the pontiac firebird?" whose answer is 1967.
Each document should contain about 30 words, and these documents should contain useful information.

Query: first year Pontiac Firebird
Useful Output:

Doc 1: The first generation Pontiac Firebird lasted from 1967–1969, and had engine options ranging from a 230 cid inline-six to a big-block 400 cid V8.
Doc 2: "Fast N' Loud" host Richard Rawlings's 1967 Pontiac Firebird, Serial No. 001, is goin up for auction later this month.
Doc 3: First Generation (1967–1969): 1969 Firebird Trans Am Convertible. 1969 is when it all started, with Pontiac introducing the famous Trans Am to
Doc 4: The Pontiac Firebird was one of the most iconic muscle cars of the late 1960s through the early 2000s, rivaling other famous models like the
Doc 5: Introduced in 1967, the Pontiac Firebird formed part of the great muscle cars of the late '60s and early '70s. Many people don't know, but the