Input: Read this: The main crops grown are barley, wheat, buckwheat, rye, potatoes, and assorted fruits and vegetables. Tibet is ranked the lowest among China's 31 provinces on the Human Development Index according to UN Development Programme data. In recent years, due to increased interest in Tibetan Buddhism, tourism has become an increasingly important sector, and is actively promoted by the authorities. Tourism brings in the most income from the sale of handicrafts. These include Tibetan hats, jewelry (silver and gold), wooden items, clothing, quilts, fabrics, Tibetan rugs and carpets. The Central People's Government exempts Tibet from all taxation and provides 90% of Tibet's government expenditures. However most of this investment goes to pay migrant workers who do not settle in Tibet and send much of their income home to other provinces.
Question: What has increased tourism to Tibet in recent years?

Output: increased interest in Tibetan Buddhism

Input: Read this: Turner Classic Movies is available in many other countries around the world. In Canada, TCM began to be carried on Shaw Cable and satellite provider Shaw Direct in 2005. Rogers Cable started offering TCM in December 2006 as a free preview for subscribers of its digital cable tier, and was added to its analogue tier in February 2007. While the schedule for the Canadian feed is generally the same as that of the U.S. network, some films are replaced for broadcast in Canada due to rights issues and other reasons. Other versions of TCM are available in Australia, France, Middle East, South Africa, Cyprus, Spain, Asia, Latin America, Scandinavia, the United Kingdom, Ireland and Malta. The UK version operates two channels, including a spinoff called TCM 2.
Question: What Canadian cable provider first carried Turner Classic Movies?

Output: Shaw Cable

Input: Read this: The islands enjoy a mild climate and varied soils, giving rise to a diverse pattern of vegetation. Animal and plant life is similar to that of the northwestern European continent. There are however, fewer numbers of species, with Ireland having even less. All native flora and fauna in Ireland is made up of species that migrated from elsewhere in Europe, and Great Britain in particular. The only window when this could have occurred was between the end of the last Ice Age (about 12,000 years ago) and when the land bridge connecting the two islands was flooded by sea (about 8,000 years ago).
Question: The beginning of the last Ice Age occurred when?

Output: unanswerable

Input: Read this: It authorized the Secretary of the Interior to list endangered domestic fish and wildlife and allowed the United States Fish and Wildlife Service to spend up to $15 million per year to buy habitats for listed species. It also directed federal land agencies to preserve habitat on their lands. The Act also consolidated and even expanded authority for the Secretary of the Interior to manage and administer the National Wildlife Refuge System. Other public agencies were encouraged, but not required, to protect species. The act did not address the commerce in endangered species and parts.
Question: What did the National Wildlife Refuge System preserve?

Output:
unanswerable