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: How many soldiers did Britain send to World War I the year Roebuck arrived on the Western Front? Passage 1:Despite its initial success, Epcot constantly met the challenges of evolving with worldwide progress, an issue that caused the park to lose relevance and become outdated in the 1990s. To maintain attendance levels, Disney introduced seasonal events such as the International Flower & Garden Festival and the International Food & Wine Festival in 1994 and 1995, respectively. In the mid-1990s, Disney also began to gradually phase out the park's edutainment attractions in favor of more modern and thrilling attractions. As a result, many of the attractions within the Future World pavilions, were either rehauled or replaced entirely. Universe of Energy was reconfigured as Ellen's Energy Adventure in 1996, World of Motion was rethemed as Test Track, and Horizons was demolished in 1999 and replaced with . Walt Disney World held the Millenium Celebration with the central focus of the event at Epcot. The Living Seas was closed in 2005, and rethemed with the introduction of characters from Finding Nemo, as The Seas with Nemo and Friends. That same year, the Soarin' attraction was added to The Land. Wonders of Life closed in 2007, with the pavilon being occasionally used for the park's annual festivals.
 Passage 2:As a boy, Roebuck worked as a trammer and after being sentenced to one month's imprisonment for stealing a watch in 1904, he enlisted in the York and Lancaster Regiment. Over the next seven years, he was stationed in India and Ireland and was promoted to lance corporal, but was demoted back to private in 1910 for "misconduct". He married in 1908 and had two children. Roebuck was discharged into the reserves in 1912 and likely returned to work as a miner prior to becoming a professional footballer in 1913. After Britain's entry into the First World War in August 1914, he was called up by the York and Lancaster Regiment and arrived on the Western Front in September 1914. On 18 October 1914, Roebuck recorded as "presumed dead" after an attack near Beaucamps-Ligny during the Race to the Sea. His death was confirmed by two comrades in January 1915. Roebuck is commemorated on the Ploegsteert Memorial to the Missing.
 Passage 3:In December, Jax started a feud with Sasha Banks, whom she injured as part of the storyline. This led to two matches between the two: Jax was victorious at the Royal Rumble pre-show on January 29, 2017, but she lost on March 5 at Fastlane. On April 3 at WrestleMania 33, Jax competed in a fatal four-way elimination match against Banks, Bayley and Charlotte Flair for the Raw Women's Championship, but she was eliminated first. On the June 26 episode of Raw, Jax competed in a gauntlet match to determine a number one contender for Alexa Bliss's Raw Women's Championship, eliminating Bayley, Mickie James, Dana Brooke and Emma consecutively before being defeated by Banks. On September 24 at No Mercy, Jax took part of a fatal five-way match for the Raw Women's Championship, but she failed to win the title. On November 19 at Survivor Series, Jax once again was a part of Team Raw in a five-on-five elimination tag team match from which she was eliminated by countout.

Solution:
2