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 are the Caha Mountains? Passage 1:Starting at Glengarriff, the Beara Way enters the Glengarriff Woods Nature Reserve and then climbs into the Caha Mountains to an altitude of as it traverses the pass north of Sugarloaf mountain before descending to reach the village of Adrigole. From Adrigole, the trail follows the southern flanks of Hungry Hill and the Slieve Mish Mountains to reach Castletownbere. A spur route makes a circuit of Bere Island, which is connected to Castletownbere by a ferry service. The route from Castletownbere to Allihies is via an old cattle droving path. Copper mining was the main activity in Ahillies for many years and the remains of abandoned mine working dot the landscape. Another circular spur route starts from Allihies and brings the trail to the very tip of the Beara Peninsula where a cable car connects the trail with Dursey Island. From Ahillies, the trail follows a miners' track and climbs the copper-rich crags above the village, crossing a mountain pass to reach Eyeries. A ridge along the coast connects Eyeries with Ardgroom. The trail then crosses into County Kerry to reach Tuosist, via Lauragh. From Tuosist, the Way crosses the northern slopes of Knockagarrane and then passes between Clonee Lough and Lough Inchiquin before crossing a mountain pass. The route diverges here, continuing north to Kenmare or south to Bonane. The final stage returns to Glengarriff via Bonane Heritage Park and Esk mountain. A spur route connects Glengarriff with Kealkill, Gougane Barra and Ballingeary.
 Passage 2:The medicinal use of wine was frequently studied by the Greeks, including Hippocrates, who did extensive research on the topic. He used wine as a cure for fevers, to ease convalescence and as an antiseptic. He also studied the effect of wine on his patients' stool. Various types of wine were prescribed by Greek doctors for use as an analgesic, diuretic, tonic and digestive aid. The Greeks were also aware of some negative health effects, especially those arising from the consumption of wine beyond moderation. Athenaeus made frequent mention of wine's ability to induce hangover and suggested various remedies for it. The poet Eubulus noted that three bowls (kylikes) were the ideal amount of wine to consume. The quantity of three bowls to represent moderation is a recurring theme throughout Greek writing (today, the standard 750 ml bottle contains roughly three to six glasses of wine, depending on serving size). In his c. 375 BC play Semele or Dionysus, Eubulus has Dionysus say:
 Passage 3:At the time, the Thirty Years' War was raging across Europe. Gabriel Bethlen, prince of Transylvania saw an opportunity to unite the two Hungarian principalities, Transylvania and Royal Hungary, and sacked Vienna in November 1619. He also asked Sultan Osman II for aid, but this was unsuccessful. The Commonwealth was relatively uninvolved in this war but the Polish king, Zygmunt III Waza, sent an elite and ruthless mercenary unit, the Lisowczycy, to aid his Habsburg allies. They defeated the Hungarian lord George Rákóczi at the Battle of Humenné in 1619, and thus, cut the supply lines of Transylvanian forces. Then Gaspar Graziani, ruler of Moldavia, switched sides and joined Poland.

Output:
1