You will be given a definition of a task first, then some input of the task.
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.

Question: In what country was the dynasty based which Dasharatha ruled as king? Passage 1:Dasharatha was the king of Ikshvaku dynasty who ruled Ayodhya. He had four princes Rama, Lakshmana, Bharata and Shatrughna. Janaka ruled Videha. His daughter Sita was married to Rama. Sita was kidnapped by Ravana, who took her to his kingdom Lanka. During the search for Sita, Rama and Lakshmana meet Sugriva and Hanuman. Sugriva, the king of Vanara clan was removed from his throne of Kiskindha by his brother Vali(He later become Jain Monk and attained Moksha). Rama and Lakshmana helped Sugriva get back his kingdom. They, along with the army of Sugriva marched towards Lanka. Vibhishana, Ravana's brother tried to persuade him to return Sita. However, Ravana did not agree. Vibhishana allied with Rama. There was a war fought between the armies of Rama and Ravana. Lakshmana kills Ravana in the end(deviating from the Ramayana where the hero Rama slays Ravana) and Vibhishana becomes the king of Lanka. Rama and Lakshmana return to Ayodhya. Rama had around eight thousand wives among whom Sita was the principle consort(in the Hindu epic , Rama has only one wife Sita), where as Lakshmana had around sixteen thousand wives in which Prithvisundari was his principle consort(in the Hindu epic, he had only one wife, Urmila). After Lakshmana's death, Rama becomes a monk. He attains Kevala Jnana and subsequently moksha. Lakshmana and Ravana, on the other hand, go to hell. Sita was born in heaven.
 Passage 2:Sir Francis Pettit Smith of Kent invented the screw propeller. Faversham Oyster Fishery is the oldest company in the world. Maidenhead Railway Bridge is known for its flat arch, built in 1839 with 39-metre spans. The Wealden iron industry in the Weald was the site of the first blast furnace in Britain in 1491, and produced much of Britain's cast iron until the 1770s. Portsmouth Block Mills were the site of the world's first metal machine tools, built for the manufacture of wooden pulleys, invented by Henry Maudslay, and the site of the world's first industrial assembly line in 1803. South Foreland Lighthouse on 8 December 1858 was the world's first lighthouse with electric light, with the first type of industrial electrical generator made by Frederick Hale Holmes, from work he had carried out with Floris Nollet of Belgium, and 36 permanent magnets. By 1880, of the ten lighthouses with electric light, five were in the UK. From the lighthouse in 1899, the first international radio broadcast to France was made. Zénobe Gramme of Belgium made a much better design in 1870 with self-excitation of magnets, and the first modern dynamo. North Foreland Lighthouse was the UK's last-manned lighthouse until 1998.
 Passage 3:Odhner was born in Stockholm, Sweden and was the son of Professor Nils Hjalmar Odhner and Signhild (née Hagström). He earned a Juris Doctor degree in Genoa in 1944 and served in Genoa and Milan from 1938 to 1945 before becoming an attaché at the Ministry for Foreign Affairs in 1945. Odhner served as an attaché in Tehran and Baghdad from 1947 to 1950 and was the second secretary at the Ministry for Foreign Affairs from 1950 to 1955. He was then first secretary at the Ministry for Foreign Affairs and held the same position in Washington, D.C. from 1955 to 1959. He was legation counsellor in Warsaw from 1959 to 1961 and director at the Ministry for Foreign Affairs (head of international aid cases) from 1962 to 1964. He was ambassador in Baghdad from 1964 to 1969, also accredited to Kuwait City from 1965 to 1969 and ambassador in (Rawalpindi), Islamabad from 1969 to 1973 and ambassador in Tehran, also accredited to Kabul from 1973 to 1978. After that he was trade policy negotiator at the Ministry for Foreign Affairs from 1978 to 1982 and ambassador in Tunis from 1983 to 1984.

Output:
1