You will be given a definition of a task first, then some input of the task.
In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.

Question: Which of the two car models that GM used to counter the Plymouth Barracuda in 1967 sold the most units? Passage 1:The Mustang's success left General Motors unprepared. Chrysler introduced the Plymouth Barracuda a few weeks before the Mustang, and although it was later redesigned as a distinct "pony car", it was initially a modified Plymouth Valiant. However, the "fish car" did not enjoy as strong a market demand as Ford's "pony". General Motors executives thought the rear-engined Chevrolet Corvair Monza would compete against the Mustang, but it also sold poorly by comparison. The Monza performed well, but lacked a V8 engine and its reputation was tarnished by Ralph Nader in his book Unsafe At Any Speed. It took GM until the 1967 model year to counter with the Chevrolet Camaro and Pontiac Firebird. Lincoln-Mercury joined the competition in 1966 with the Mercury Cougar, an "upmarket Mustang" and subsequent Motor Trend Car of the Year. In 1967, American Motors (AMC) introduced the Javelin, an image changing "standout" four-place pony car. In 1969, the Dodge Challenger, a version of the Plymouth Barracuda platform, was last to join the pony car race. This genre of small, sporty automobiles is often referred to as the "pony car" because of the Ford Mustang that established this market segment.
Passage 2:Rebecca Hollweg was born in west London, and from the age of nine grew up in rural west Somerset. She is the daughter of visual artists, who have both internationally exhibited. Her father Alexander Hollweg (grandson of the painter Edward Wadsworth and son of the Olympic ice-hockey player Joachim von Bethmann-Hollweg) is a painter and sculptor whose work is in the Tate Gallery collection and in private and corporate collections in North America and in Italy. His murals are in the Charlotte Street Hotel and the Soho Hotel in central London. Her mother Geraldine Hollweg is a silversmith and enameller, who trained as a painter at the Ruskin School of Drawing and Fine Art, Oxford and worked as a scene painter at the Royal Shakespeare Company. Her brother is Lucas Hollweg, former Sunday Times food writer, now writing for Waitrose Kitchen.
Passage 3:"My Father's Song" was released as the album's lead single in August 1975. The 7" record was released in the United States and Spain where the song was retitled "La Cancion de Mi Padre". The song was paired with B-side "By the Way", although in Spain the track was titled "Da Paso". The single enjoyed success on the United States Adult Contemporary chart, where it peaked at numbers 11. It also entered the similar chart in Canada, where it reached number 15. Nicky Siano, a disc jockey, began playing Streisand's version of "Shake Me, Wake Me (When It's Over)" at The Gallery nightclub in New York City in the fall of 1975; in a handwritten letter by Streisand for Siano, she wrote that the hype generated from playing her cover at the club prompted Columbia Records to release it as another single from Lazy Afternoon. It was distributed in 7" and 12" vinyl formats on November 12, 1975 featuring the B-side and album track "Widescreen". A British version of the single was also created and features the longer cut of the single instead of the album version. Streisand's cover was noted by writers for Billboard as an attempt for pop singers to begin "releasing disco records"; other singers like Andy Williams and Ethel Merman were also mentioned as individuals following the fad. Due to heavy airplay in dance clubs, it entered two of the dance charts compiled by Billboard; it peaked at number 14 on the Dance Club Songs chart and number 10 on the Disco Singles chart.

Output:
1