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.
Q: Question: What is the size of the park where the largest concentration of Mistletoebirds can be found? Passage 1:Rohrbach was first mentioned in 795 as Roorbah when a local noble, Heribold, gave his lands in Madiswil to the church in Rohrbach. In the 9th century some land around the village was given to the Abbey of St. Gall. The Abbey established an administrator in Rohrbach to manage their lands in the Oberaargau region. Since the Abbey was an Imperial Abbey, the administrator and the landholders on the Abbey's land had immunity from the local count's court and could only be arrested or tried by the Abbey court. At the beginning of the 14th century the bailiwick and the low court of the local Barons of Ruti. Between 1314 and 1370 both offices were held by the Count of Signau and after 1371 by the Count of Grünenberg. The Grünenberg Counts incorporated the village into their personal territory. Hermann of Eptingen then acquired the rule over the village by marriage. He supported the Austrian Habsburgs in the Old Zürich War (1440–46) and lost the village to a Bernese army. After the war, the village was returned to his wife in 1449. In 1504 Bern bought the entire village from Hermann's decedents. In 1505 the village was incorporated into the bailiwick of Wangen. However, Rohrbach retained several special privileges. They were exempt from forced labor for the bailiff and in wars they marched under the banner of the city of Bern. After the 1798 French invasion it was part of the District of Langenthal in the Helvetic Republic and in 1803 it went to the District of Aarwangen.
 Passage 2:The Ulster Cycle stories are set in and around the reign of King Conchobar mac Nessa, who rules the Ulaid from Emain Macha (now Navan Fort near Armagh). The most prominent hero of the cycle is Conchobar's nephew, Cú Chulainn. The Ulaid are most often in conflict with the Connachta, led by their queen, Medb, her husband, Ailill, and their ally Fergus mac Róich, a former king of the Ulaid in exile. The longest and most important story of the cycle is the Táin Bó Cúailnge or Cattle Raid of Cooley, in which Medb raises an enormous army to invade the Cooley peninsula and steal the Ulaid's prize bull, Donn Cúailnge, opposed only by the seventeen-year-old Cú Chulainn. In the Mayo Táin, the Táin Bó Flidhais it is a white cow known as the 'Maol' that is the object of desire, for she can give enough milk at one milking to feed an army. Perhaps the best known story is the tragedy of Deirdre, source of plays by W. B. Yeats and J. M. Synge. Other stories tell of the births, courtships and deaths of the characters and of the conflicts between them.
 Passage 3:Population densities of mistletoebirds recorded around Australia vary from 0 to 2 birds per hectare with a mean of 0.35 birds per hectare (in areas unaffected by agriculture), where the largest concentration was found in the Kakadu National Park, Northern Territory. The longevity of a mistletoebird has been recorded in southern Queensland where a banded adult male was recaptured near the banding site after 9 years. Mistletoebirds vocally mimic other birds. Heard in all seasons and given by both sexes, they have been recorded mimicking the mulga parrot ( Psephotus varius) as well as more than 25 different species of passerines. Predators known to have taken mistletoebird nestlings are the grey shrike-thrush (Colluricincla harmonica), pied butcherbird (Cracticus nigrogularis), pied currawong (Strepera graculina) and the Australian raven (Corvus coronoides). Nests have also been parasitized by a number of cuckoo species including the horsfield bronze cuckoo (Chrysococcyx basalis) and the fan-tailed cuckoo (Cuculus pyrrhophanus).

A:
3