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.

Ex Input:
Question: How long did Aulus Plautius live after capturing the lands south of the River Trent? Passage 1:The general outline of the Roman conquest of Britain during the 1st century AD is recorded by historical sources; for the involvement of specific forts historians depend on archaeological excavations. This part of Britain was occupied by a tribe known as the Cornovii. In AD 4647 the Roman Army led by governor Aulus Plautius had probably occupied the lands to the south of the River Trent. Late in 47 the new governor of Britain, Ostorius Scapula, began a campaign against the tribes of the western mountains (modern Wales). Caratacus, their leader, was defeated in battle in AD 50 and fled to the Brigantes who occupied the Pennines. Their queen, Cartimandua, came to terms with the Romans and handed Caratacus over to them. Ostorius died and was replaced by Aulus Gallus who brought the Welsh borders under control but did not move further north or west. It was at about this time that the fort at Strutt's Park was built. It probably lay not far south of the border between Roman territory and that held by the Brigantes, who were now an allied or subject kingdom.
Passage 2:In 1854 Klindworth went to London, where he remained for fourteen years, studying, teaching and occasionally appearing in public. From London Klindworth went to Moscow in 1868, following Nikolai Rubinstein's invitation to take up the position of professor of pianoforte at the Moscow Conservatory, where he first met Pyotr Ilyich Tchaikovsky as professor of harmony. While in Russia he completed his pianoforte arrangements for Wagner's Der Ring des Nibelungen, which he had commenced during Wagner's visit to England in 1855, Beethoven's sonatas and also his critical edition of Frederic Chopin's works. He then became conductor of the Berlin Philharmonic in 1882, in association with Joseph Joachim and Franz Wullner, being also the conductor of the Berlin Wagner Society. At this time, he established the Klindworths Musikschule, which later became the Klindworth-Scharwenka Conservatory.
Passage 3:Kevin Francis (born June 5, 1993) is a professional Canadian football linebacker for the Ottawa Redblacks of the Canadian Football League (CFL). After going undrafted in the 2016 NFL draft, Francis declared eligible for the 2016 CFL Supplemental Draft after informing the league that he was born in Toronto, Ontario. He was drafted by the Roughriders on May 26, 2016, who forfeited a third round selection in the 2017 CFL Draft to acquire his rights. Upon entering 2016 training camp, Francis switched to the defensive side of the ball after playing as a tight end during his college football career with the North Carolina A&T Aggies. He made his CFL debut on June 30, 2016 against the Toronto Argonauts, registering his first defensive tackle. Francis finished his rookie season leading the team in special team tackles, also being ranked 7 on the CFL rising sophomore list

Ex Output:
1

Ex Input:
Question: Where was McMahon's post-doctoral mentor from? Passage 1:Ain't She Sweet was an American album featuring four tracks recorded in Hamburg in 1961 by The Beatles featuring Tony Sheridan (except for the title song with vocal by John Lennon) and cover versions of Beatles and British Invasion-era songs recorded by the Swallows. As Atlantic Records only had rights to four Sheridan/Beatle recordings recorded by Polydor Records, they filled the rest of the album with Beatle and British Invasion cover songs. When this material was released by Atco Records, there were mono (catalogue number 33-169) and stereo (SD 33-169) editions. Atco also added additional drum overdubs to the four Sheridan cuts on top of the original drum tracks. American drummer Bernard Purdie claims to have performed overdubs of unspecified Beatles records, which would most likely have been for Ain't She Sweet, but this has never been officially confirmed.
Passage 2:McMahon contributed to the understanding of retinal neurophysiology alongside his post-doctoral mentor, John E. Dowling. His early research focused on ion channels that mediate transmission at electrical and glutamatergic synapses and the modulatory effects of dopamine and nitric oxide on retinal synapse networks. Through studies with zebrafish he discovered that the neurotransmitter dopamine decreases the electrical coupling within horizontal cells. Further research showed that it was the increase of cAMP within the cell resulting from dopamine binding to AMPA receptor that led to this decrease in coupling. McMahon and his colleagues also demonstrated that exogenous nitric oxide and zinc can modulate AMPA receptor mediated synaptic transmission at gap junctions in hybrid bass retinal neurons.
Passage 3:The river starts at Ralph Bice Lake (formerly Butt Lake) in northern Algonquin Provincial Park in the geographic township of Butt in the Unorganized South Part of Nipissing District. It flows south to Daisy Lake then east to Big Trout Lake. The river heads north out the lake over Big Trout Lake Dam, takes in the left tributary Tim River, flows over the Portal Rapids, Cedar Rapids, Snowshoe Rapids, Catfish Rapids, and Stacks Rapids to reach Cedar Lake, the location of the community of Brent, where it takes in the left tributary Nipissing River. The river exits the lake over a dam, heads through the Devil's Chute, reaches Radiant Lake, where it takes in the left tributary North River and right tributary Little Madawaska River, and passes through the Squirrel Rapids, Big Sawyer Rapids, Battery Rapids Cascade Rapids and White Horse Rapids, and takes in the right tributary Crow River. The river then continues through a series of rapids including the Devil's Cellar Rapids, passes the Algonquin Radio Observatory, and reaches Lake Travers. The Petawawa River enters a canyon and passes through numerous rapids including the Big Thompson Rapids, Little Thompson Rapids, Grillade Rapids, Crooked Chute, Rollway Rapids, The Natch, Schooner Rapids, Five Mile Rapids to arrive at Whitson Lake adjacent to the Petawawa Hills. It leaves Algonquin Provincial Park and enters the municipality of Laurentian Hills in Renfrew County, continues southeast past CFB Petawawa, passes through the Crooked Rapids, Race Horse Rapids, White Horse Rapids and Halfmile Rapids, and reaches Lac du Bois Dur, where it takes in the right tributary Barron River. The river enters the town of Petawawa, heads under Ontario Highway 17, through the Big Eddy Rapids, under the Canadian Pacific Railway main line, and empties into Black Bay on the Ottawa River.

Ex Output:
2

Ex Input:
Question: When was the fictional robot character that was found deactivated inside a shuttle first created? Passage 1:The Thynne family descends from the soldier and courtier Sir John Thynne (died 1580), who constructed Longleat House between 1567 and 1579. In 1641 his great-grandson Henry Frederick Thynne was created a Baronet, of Caus Castle, in the Baronetage of England (some sources claim that the territorial designation is "Kempsford in the County of Gloucester"). He was succeeded by his son, the second Baronet. He represented Oxford University and Tamworth in the House of Commons and also served as Envoy to Sweden. In 1682 he was raised to the Peerage of England as Baron Thynne, of Warminster in the County of Wilts, and Viscount Weymouth, in the County of Dorset, with remainder to his younger brothers James Thynne (who died unmarried) and Henry Frederick Thynne and the heirs male of their bodies.
Passage 2:After the Arrow Cross Party's coup and the resignation of Horthy on October 16, 1944 Ferenc Szalasi was appointed "Leader of the Nation". He established a Regent Council of three members, all from the Hungarian Nazi party. After the Soviet occupation of Hungary a High National Council formed in 1945 which was the collective head of state until the declaration of the Second Hungarian Republic. Members of the first High National Council were Bela Zsedenyi (Speaker of the Interim National Assembly), Bela Miklos (Prime Minister) and Erno Gero (from the Hungarian Communist Party, later replaced by Jozsef Revai, then by Matyas Rakosi). But the real power was in the hands of the Allied Control Commission, led by Kliment Voroshilov.
Passage 3:While testing a new heat- and radiation-resistant alloy in deep space, scientists Jessica Morgan and Gregory Swofford stumble upon an Autobot shuttle about to crash into a nearby star. A cursory evaluation of the shuttle reveals a deactivated Optimus Prime within. Jessica, unable to sit by and watch the Autobots' greatest leader die convinces Gregory to help her rescue him, despite Gregory's own reservations. In a previous accident stemmed by a conflict between Optimus and Megatron, which he blames on Optimus, Gregory's face was scarred, rendering him distrustful of any Transformer from then on. Fortunately, they are able to rescue the Autobot leader and move away from the shuttle as it collides with the star and causes it to nova, their alloy proving sufficient enough to withstand the intense heat and radiation the explosion produced. With both missions a success, they head for home, but not before Gregory notices a series of unusual spores attaching themselves to their ship's hull. Back on Earth, in Washington, D.C. , Gregory and Jessica's father begin running tests on the spores, and soon discover them to be a highly infectious contagion able to induce and exacerbate hatred and destructive impulses in any sentient being they contaminate. Despite the obvious danger, the two scientists are eager to continue studying the spores, a prospect Jessica openly objects to. Before a consensus can be formed, however, their lab is attacked by the Terrorcons, who are after their new alloy. The Technobots quickly join in to protect the humans and the metal, and in the resulting battle, Jessica is severely wounded and taken to the local hospital. This prompts an angry backlash from Jessica's father, who is encouraged by Gregory to get revenge on both factions by reviving Optimus and using him as a carrier for the plague. This is exacerbated when they learn Jessica was rendered paraplegic in the accident, and now needs a specialized exosuit to walk. Unfortunately for them, they are unable to revive Optimus, and are content to scrap his body to make more of their alloy. Jessica makes a futile attempt to save Optimus by appealing to her father's and Gregory's sense of morality, and is only successful when they realize that, as the Autobots' leader, they could use Optimus' body as bait to lure the rest of the Autobots into a trap. Because of her friendship with the Autobots, Jessica is forced to lure them into the trap, something she hates and hopes she will not learn to hate her father and colleague for. She arrives on scene with Ultra Magnus, and meets with the new leader, Rodimus Prime. She tells Rodimus it's a trap though he does not care and assembles an assault team to retrieve Optimus' body so he can rest in peace. Ratbat hears this and goes back to an abandoned football stadium where Soundwave plays the recorded conversation for Galvatron, who is planning to destroy Prime's body. Then he took off with Cyclonus, Scourge, the Sweeps, the Stunticons, the Combaticons and the Predacons, leaving Soundwave and Ratbat in the football stadium. When they get there, Rodimus tells Defensor and a few other Autobots to stay behind, while the rest retrieve Optimus, but warns them not to touch any red dust. Rodimus tells Ultra Magnus to take the Aerialbots and Throttlebots and retrieve Optimus' body, while Rodimus and Jessica distract Swofford and Morgan. Defensor and several Autbots stay behind to guard against the Decpticons. Rodimus and Jessica find the body of Optimus in the wrong room, and realize too late the trap that is being laid for the other Autobots. Gregory floods the lab containing Ultra Magnus, the Aerialbots and the Throttlebots with the red spores; infecting all of them. Morgan and Swofford's plan is successful as the spores make Ultra Magnus, the Aerialbots and Throttlebots go crazy and fight each other and quickly the Decepticons (except Galvatron) join the diseased army. Rodimus and Jessica escape from being infected and head back to headquarters to Wreck Gar, not knowing that Ultra Magnus is following. Defensor is seen clearing the bridge while the sickened Superion comes on scene and infects Defensor. Kup, Blurr, Wheelie, Steeljaw, and Bumblebee try to subdue Superion but become severely injured. Rodimus asks Wreck-Gar and the Junkions if they can revive Optimus but they are unsuccessful. Rodimus shuts down Metroplex so he cannot be infected and tells Sky Lynx to retrieve a Quintesson to revive him. The sickened Ultra Magnus appears and chases Rodimus to an alley. It seems like he's doomed only to be saved by Wreck Gar with his lasso, but unfortunately Wreck Gar gets infected, and quickly infects Rodimus. The spores travel throughout the galaxy pitting everyone against each other, human and Transformer alike. In space, Sky Lynx manages to find a Quintesson getting chased by a group of diseased Sharkticons. Sky Lynx says he will save the Quintesson, in exchange of reviving Optimus which he agrees. After a bit trouble, the duo revives Optimus, who awakens as the entire universe is descending into madness.

Ex Output:
3