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: What percent of daylight is scattered in the atmosphere? Passage 1:The source of all daylight is the Sun. The proportion of direct to diffuse light impacts the amount and quality of daylight. "Direct sunlight" reaches a site without being scattered within Earth's atmosphere. Light that is scattered in the atmosphere is diffused daylight. Ground reflected light also contributes to the daylight. Each climate has different composition of these daylights and different cloud coverage, so daylighting strategies vary with site locations and climates. There is no direct sunlight on the polar-side wall (north-facing wall in the Northern Hemisphere and south-facing wall in the Southern Hemisphere) of a building from the autumnal equinox to the spring equinox at latitudes north of the Tropic of Cancer and south of the Tropic of Capricorn.
 Passage 2:A constitutional referendum was held throughout Turkey on 16 April 2017 on whether to approve 18 proposed amendments to the Turkish constitution that were brought forward by the governing Justice and Development Party (AKP) and the Nationalist Movement Party (MHP). If approved, the office of the Prime Minister would be abolished and the existing parliamentary system of government would be replaced with an executive presidency and a presidential system. The number of seats in Parliament was proposed to be raised from 550 to 600 while the president was proposed to be given more control over appointments to the Supreme Board of Judges and Prosecutors (HSYK). The referendum was held under a state of emergency that was declared following a failed military coup attempt in July 2016.
 Passage 3:Hasselborg won her first Grand Slam in the lone women's Elite 10 in 2018, going undefeated through the tournament and defeating Silvana Tirinzoni in the final. A few weeks later, she won her second career Stockholm Ladies Cup. Then, at the 2018 Masters, Hasselborg won her second straight slam, defeating Rachel Homan in the final. The following month, Hasselborg and her team took home the gold medal at the 2018 European Curling Championships, her first gold medal at the Euros, defeating Swtizerland's Silvana Tirinzoni rink in the final. Hasselborg lost the world final once again at the 2019 World Women's Curling Championship, this time losing to Silvana Tirinzoni. She was however victorious at the 2019 World Mixed Doubles Curling Championship with partner Oskar Eriksson. The team secured the number one spot in the playoffs en route to defeating the Canadian pair of Jocelyn Peterman and Brett Gallant in the final.

Output:
1