Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Question: Which country where Knifetooth sawfish can be found has the largest population? Passage 1:The knifetooth sawfish (Anoxypristis cuspidata), also known as the pointed sawfish or narrow sawfish, is a species of sawfish in the family Pristidae, part of the Batoidea, a superorder of cartilaginous fish that includes the rays and skates. Sawfish display a circumglobal distribution in warm marine and freshwater habitats. Their extant biodiversity is limited to five species belonging to two genera (Pristis and Anoxypristis). The sawfishes are characterised by the long, narrow, flattened rostrum or extension on their snout. This is lined with sharp transverse teeth, arranged in a way that resembles the teeth of a saw. It is found in the shallow coastal waters and estuaries of the Indo-West Pacific, ranging from the Red Sea and the Persian Gulf to southern Japan, Papua New Guinea and northern Australia. It is the only living member of the genus Anoxypristis, but was previously included in the genus Pristis. Compared to that genus, Anoxypristis has a narrower rostral saw with numerous teeth on the distal part and no teeth on the basal one-quarter (toothless section about one-sixth in juveniles). This endangered species reaches a length of up to .
 Passage 2:The Reali school was established by Arthur Biram on behalf of EZRA, a German Jewish organization, and in close connection with the Technion in 1913, before the outbreak of World War I. The fundamental values of the school are Zionism, humanism, tolerance and democracy. At the time, the Yishuv, or pre-state Jewish community in Palestine, was engaged in a debate over the language of instruction in the country's Jewish schools. When it was decided that the sciences would be taught in German, Biram responded by founding the Hebrew Reali School. The first branch of the school was opened in the Hadar neighborhood of Haifa. In 1923, the school moved into a building on the old campus of the Technion which had formerly been used as a British military hospital. During that period the school founded a Scouts troop ‘Carmel Wanderers’ (; Meshotetei Carmel) and in 1924 the school opened a Humanistic major, in addition to the previously offered science major. At the very same year the schools motto was determined: "And Walk Humbly" (; vehatzna‘ lechet) (Micha, 6:8). This motto expresses the schools aspirations in the realm of education.
 Passage 3:Promoted to rear admiral on 27 May 1825, Hamond travelled in the third-rate HMS Spartiate on his new mission to deliver the treaty of separation between Brazil and Portugal to King John VI of Portugal. He inherited his father's baronetcy in September 1828. He was advanced to Knight Commander of the Order of the Bath on 13 September 1831 and became Commander-in-Chief, South American Station, with his flag in the third-rate HMS Spartiate, in September 1834. Promoted to vice admiral on 10 January 1837 and to full admiral on 22 January 1847 he was advanced to Knight Grand Cross of the Order of the Bath on 5 July 1855. He was appointed Rear-Admiral of the United Kingdom on 22 November 1860 and Vice-Admiral of the United Kingdom on 5 June 1862 before being promoted to Admiral of the Fleet on 10 November 1862.

Student:
1