Input: Read this: Since 1973 Plymouth has been supplied water by South West Water. Prior to the 1973 take over it was supplied by Plymouth County Borough Corporation. Before the 19th century two leats were built in order to provide drinking water for the town. They carried water from Dartmoor to Plymouth. A watercourse, known as Plymouth or Drake's Leat, was opened on 24 April 1591 to tap the River Meavy. The Devonport Leat was constructed to carry fresh drinking water to the expanding town of Devonport and its ever growing dockyard. It was fed by three Dartmoor rivers: The West Dart, Cowsic and Blackabrook. It seems to have been carrying water since 1797, but it was officially completed in 1801. It was originally designed to carry water to Devonport town, but has since been shortened and now carries water to Burrator Reservoir, which feeds most of the water supply of Plymouth. Burrator Reservoir is located about 5 miles (8 km) north of the city and was constructed in 1898 and expanded in 1928.
Question: Who provided Plymouth's water prior to 1973?

Output: Plymouth County Borough Corporation


Input: Read this: The main cast was revealed in December 2014 at the 007 Stage at Pinewood Studios. Daniel Craig returned for his fourth appearance as James Bond, while Ralph Fiennes, Naomie Harris and Ben Whishaw reprised their roles as M, Eve Moneypenny and Q respectively, having been established in Skyfall. Rory Kinnear also reprised his role as Bill Tanner in his third appearance in the series.
Question: Who returned for his eighth appearance as James Bond?

Output: unanswerable


Input: Read this: Federalism is one of the entrenched constitutional principles of Germany. According to the German constitution (called Grundgesetz or in English Basic Law), some topics, such as foreign affairs and defense, are the exclusive responsibility of the federation (i.e., the federal level), while others fall under the shared authority of the states and the federation; the states retain residual legislative authority for all other areas, including "culture", which in Germany includes not only topics such as financial promotion of arts and sciences, but also most forms of education and job training. Though international relations including international treaties are primarily the responsibility of the federal level, the constituent states have certain limited powers in this area: in matters that affect them directly, the states defend their interests at the federal level through the Bundesrat (literally Federal Council, the upper house of the German Federal Parliament) and in areas where they have legislative authority they have limited powers to conclude international treaties "with the consent of the federal government".
Question: What do the states have exclusive responsibility of?

Output: unanswerable


Input: Read this: The centre of Southampton is located above a large hot water aquifer that provides geothermal power to some of the city's buildings. This energy is processed at a plant in the West Quay region in Southampton city centre, the only geothermal power station in the UK. The plant provides private electricity for the Port of Southampton and hot water to the Southampton District Energy Scheme used by many buildings including the WestQuay shopping centre. In a 2006 survey of carbon emissions in major UK cities conducted by British Gas, Southampton was ranked as being one of the lowest carbon emitting cities in the United Kingdom.
Question: What utility company sponsored a carbon emissions survey in 2006?

Output:
British Gas