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: What other animals inhabited South America during the Cenozoic? Passage 1:Anachlysictis gracilis is an extinct carnivorous mammal belonging to the group Sparassodonta, which were metatherians (a group including marsupials and their close relatives) that inhabited South America during the Cenozoic. Unlike other remains assigned to the family Thylacosmilidae (a group of metatherian predators equipped with "saber teeth") that had been found previously, Anachlysictis is the first record of such borhyaenoids in northern South America, and also most primitive and ancient in the family (in fact, is the first confirmed record that did not belong to the genus Thylacosmilus, until the official publication of Patagosmilus in 2010). This species was found in the Villavieja Formation in the area of La Venta in Colombia, a famous fossil deposit in the Middle Miocene (Laventan; 13.8-11.8 million years ago), based on fragments that include a front portion of the lower jaw, with an incipient molar tooth and a piece of carnassial from the front of the maxilla.
 Passage 2:The film is on Neil Marshall Stevens's spec script Deader, which was submitted to Dimension Films in 2000 during the production of his script Thirteen Ghosts and had been planned to be produced by Stan Winston. As in the final film, it entailed a newspaper reporter being sent to Romania to cover an underground cult who have discovered the secret of immortality and had gained contact with an otherworldly dimension, but did not feature connections to the Hellraiser series. Although Tim Day had wanted to write a direct sequel to  featuring a final conflict between Pinhead and Kirsty, Bob Weinstein directed him to rewrite Deader into a Hellraiser sequel similar in tone to the Japanese horror films Ring, and Pulse. After a brief delay during the production of the 2006 American remake of Pulse, work on Deader resumed. Scott Derrickson was approached to direct but declined, and Rick Bota was rehired from the previous film. The film was originally rewritten to take place in London and later the Lower East Side of Manhattan before the producers opted to film it simultaneously with another Hellraiser sequel, titled  in Romania, between October and December of 2002, to save costs. Production was difficult due to the inability of the Americans in the cast and crew to understand the Romanian set workers and actors.
 Passage 3:Barschall was born as Heinrich Hermann Barschall in Berlin, Germany; his father was a patent attorney who had received a Ph.D. in chemistry after studying with Nobel Laureates Emil Fischer and Fritz Haber. After beginning study in several universities in Germany, he emigrated to the United States in 1937 during the early Holocaust period; though raised as a Lutheran, he had some Jewish ancestry. He received his Ph.D. from Princeton University in 1940 under the direction of Rudolf Ladenburg; he also worked closely with John A. Wheeler. After a suggestion by Niels Bohr, he carried out in only a few days with fellow graduate student Morton H. Kanner the first demonstration of fission by fast neutrons and thorium and uranium. His thesis was on the interaction of fast neutrons with helium. In a paper with John A. Wheeler he reported the discovery of spin-orbit coupling in neutron scattering.

Solution:
1