Input: Read this: The first satellite, BeiDou-1A, was launched on October 31, 2000. The second satellite, BeiDou-1B, was successfully launched on December 21, 2000. The last operational satellite of the constellation, BeiDou-1C, was launched on May 25, 2003.
Question: When was the last satellite for the BeiDou-1 system launched?

Output: May 25, 2003


Input: Read this: Himachal is extremely rich in hydro electric resources. The state has about 25% of the national potential in this respect. It has been estimated that about 20,300MW of hydro electric power can be generated in the State by constructing various major, medium, small and mini/micro hydel projects on the five river basins. The state is also the first state in India to achieve the goal of having a bank account for every family.[citation needed] As per the current prices, the total GDP was estimated at ₹ 254 billion as against ₹ 230 billion in the year 2004–05, showing an increase of 10.5%. The recent years witnessed quick establishment of International Entrepreneurship. Luxury hotels, food and franchisees of recognised brands e.g. Mc Donalds, KFC and Pizza hut have rapidly spread.
Question: Himachal is extremely rich in?

Output: hydro electric resources


Input: Read this: Thermally, a temperate glacier is at melting point throughout the year, from its surface to its base. The ice of a polar glacier is always below freezing point from the surface to its base, although the surface snowpack may experience seasonal melting. A sub-polar glacier includes both temperate and polar ice, depending on depth beneath the surface and position along the length of the glacier. In a similar way, the thermal regime of a glacier is often described by the temperature at its base alone. A cold-based glacier is below freezing at the ice-ground interface, and is thus frozen to the underlying substrate. A warm-based glacier is above or at freezing at the interface, and is able to slide at this contact. This contrast is thought to a large extent to govern the ability of a glacier to effectively erode its bed, as sliding ice promotes plucking at rock from the surface below. Glaciers which are partly cold-based and partly warm-based are known as polythermal.
Question: Why are warm based glaciers not able to slide?

Output: unanswerable


Input: Read this: On 15 September 1940, known as the Battle of Britain Day, an RAF pilot, Ray Holmes of No. 504 Squadron RAF rammed a German bomber he believed was going to bomb the Palace. Holmes had run out of ammunition and made the quick decision to ram it. Holmes bailed out. Both aircraft crashed. In fact the Dornier Do 17 bomber was empty. It had already been damaged, two of its crew had been killed and the remainder bailed out. Its pilot, Feldwebel Robert Zehbe, landed, only to die later of wounds suffered during the attack. During the Dornier's descent, it somehow unloaded its bombs, one of which hit the Palace. It then crashed into the forecourt of London Victoria station. The bomber's engine was later exhibited at the Imperial War Museum in London. The British pilot became a King's Messenger after the war, and died at the age of 90 in 2005.
Question: What is the date of the celebration of Britain Day?

Output:
unanswerable