Detailed Instructions: 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.
Problem:Question: Was the firm that he worked for until 1988 established before 1950? Passage 1:Born in New York City, New York on July 11, 1923, the son of United States Secretary of War Robert P. Patterson, Patterson Jr. was in the United States Army Air Corps from 1942 to 1956, during which time he received a Bachelor of Arts degree from Harvard College in 1947 and a Bachelor of Laws from Columbia Law School in 1950. He was in private practice in New York City from 1950 to 1952, then served as assistant counsel to the New York State Crime Commission from 1952 to 1953, and as an Assistant United States Attorney for Southern District of New York from 1953 to 1956. He was also an assistant counsel to the United States Senate Banking and Currency Committee in 1954. He was in private practice in New York City again from 1956 (joining the firm founded by his father, Patterson, Belknap & Webb - later Patterson, Belknap, Webb & Tyler) to 1988, working as a special hearing officer for conscientious objectors in the United States Department of Justice from 1961 to 1968, and as minority counsel to a Select Committee Pursuant to United States House of Representatives Resolution Number 1 in 1967.
Passage 2:Lyon was commissioned as a Second Lieutenant into the 4th (Extra Reserve) Battalion, the North Staffordshire Regiment in February 1900, but two months later, in April of the same year, transferred to the 2nd Battalion of the regiment. The 2nd Battalion was a regular battalion and was at the time on active service in South Africa during the Second Boer War, where Lyon joined the battalion and served with it throughout the war being Mentioned in Despatches in 1901. He was promoted to lieutenant on 19 January 1901, while in South Africa. After peace was declared in May 1902, Lyon left Cape Town on board the SS Bavarian and arrived in the United Kingdom the following month. He remained with the 2nd Battalion when it was posted to India in 1903 where he became adjutant and was promoted to captain.
Passage 3:Burn made his debut in County Cricket for Durham in the 1985 Minor Counties Championship against Cumberland. From 1985 to 1991, he represented the county in 40 Championship matches, the last of which came against Cambridgeshire. Burn also represented Durham in the MCCA Knockout Trophy, making his debut in that competition against Hertfordshire in 1986. From 1986 to 1991, he played 6 Trophy matches for the county, the last of which came against Cumberland. It was for Durham that Burn made his debut in List A cricket against Derbyshire in the 1985 NatWest Trophy. From 1985 to 1991, he represented the county in 6 List A matches, the last of which came against Glamorgan in the 1991 NatWest Trophy. Following Durham's elevation to first-class status at the end of the 1991 season, Burn played no further matches for the county.

Solution:
1