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.
Input: Question: Is London the capital of the United Kingdom? Passage 1:He joined fellow Championship side Stoke City for a £225,000 fee in August 2006. He was made captain when Michael Duberry left in January 2007 and Stoke went on to narrowly miss out on a play-off place. With Stoke not being promoted Higginbotham again decided to hand in a transfer request to help force through a move to Sunderland. He spent one season at the Stadium of Light before returning to Stoke in 2008. He became a vital member of Tony Pulis' squad as Stoke established themselves in the Premier League. He scored the winning goal in the FA Cup quarter-final against West Ham United but missed out on both the semi-final and the final due to a knee injury. After his recovery he struggled to force his way back into the side and spent time out on loan to Nottingham Forest and Ipswich Town before joining Sheffield United on a free transfer in January 2013. After eight months at Bramall Lane, he left to join Conference Premier side Chester before ending his career with a short spell at Altrincham.
 Passage 2:The University of Kent's coat of arms was granted by the College of Arms in September 1967. The white horse of Kent is taken from the arms of the County of Kent (and can also be seen on the Flag of Kent). The three Cornish choughs, originally belonging to the arms of Thomas Becket, were taken from the arms of the City of Canterbury. The Crest depicts the West Gate of Canterbury with a symbolic flow of water, presumably the Great Stour, below it. Two golden Bishops' Crosiers in the shape of a St. Andrews Cross are shown in front of it. The supporters – lions with the sterns of golden ships – are taken from the arms of the Cinque Ports.
 Passage 3:During World War II he was a soldier of the Szare Szeregi and the Home Army. Arrested by the Gestapo in 1943, he was imprisoned in the infamous Pawiak prison and then sent to Auschwitz concentration camp. Transferred to Sachsenhausen-Oranienburg he was liberated by American forces on 3 May 1945. In September of that year he joined the Polish II Corps and briefly served in counter-intelligence in Northern Italy. In 1947 he moved to Bodney in the United Kingdom and then settled in London. Working for various BOC branches, he devoted most of his spare time to studies on Polish aviation history, notably the history of Polish armed forces during World War II. 

Output:
3