Definition: 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: On average how large are the whales that were the first known organism to take advantage of the tubercle effect? Passage 1:On 1 August, Rosario announced the arrival of Lucas Gamba from Huracan on a three-year contract. Soon after, Alfonso Parot's departure to Universidad Catolica was confirmed. A goal versus Talleres from off-season signing Diego Zabala secured Rosario two wins from two in the Primera Division on 3 August. Rosario shared victories with Sarmiento in exhibition fixtures on 6 August. Rosario met Argentino in friendly action again on 9 August, as they beat them by scoring twice, as they did on 15 June, in both games. Andres Lioi headed to Poland on loan with Korona Kielce of the Ekstraklasa on 13 August. San Lorenzo and Rosario Central cancelled each other out on 17 August, as Rosario threw away a two-goal advantage to draw 22 which ended winning starts for both.
Passage 2:Historical figures and celebrated people who have lived in Esopus include naturalist John Burroughs; financier Harry Payne Bingham; abolitionist Sojourner Truth; 19th-century U.S. politician George W. Pratt; Standard Oil treasurer Colonel Oliver Hazard Payne; business leader and president of Avco Corporation Raymond Rich; the Smith Brothers, who invented the first cough drops in America; Saint Frances Xavier Cabrini (patron saint of immigrants); Major Gen. Daniel Butterfield, who founded the American Express Company and wrote "Taps" in 1862; Eugene R. Durkee, who made a fortune in spices and salad dressings and whose West Park summer mansion became part of the Christian Brothers monastery; John Jacob Astor III; boxing champion Floyd Patterson; who attended Wiltwyck School for Boys in West Park; and Alton Brooks Parker, a lawyer and judge who ran for U.S president as the 1904 Democratic Party nominee, losing to incumbent Theodore Roosevelt.
Passage 3:The tubercle effect is a phenomenon where tubercles or large 'bumps' on the leading edge of an airfoil can improve its aerodynamics. The effect, while already discovered, was analyzed extensively by Frank E. Fish et al in the early 2000 onwards. The tubercle effect works by channeling flow over the airfoil into more narrow streams, creating higher velocities. Another side effect of these channels is the reduction of flow moving over the wingtip and resulting in less parasitic drag due to wingtip vortices. Using computational modeling, it was determined that the presence of tubercles produces a delay in the angle of attack until stall, thereby increasing maximum lift and decreasing drag. Fish first discovered this effect when looking at the fins of humpback whales. These whales are the only known organisms to take advantage of the tubercle effect. It is believed that this effect allows them to be much more maneuverable in the water, allowing for easier capture of prey. The tubercles on their fins allow them to do aquatic maneuvers to catch their prey.

Output:
3