Use a disfluent question or a proper question and find the answer to the question based on the given context or return None if an answer can't be found. A disfluent question is a question that has some interruptions in it while framing. A proper question is the correct form of the question without any disfluency.
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Question: proper question: Where does the Rhine end? 
 disfluent question: Where does the Rhine begin or no I mean end? 
 context: The length of the Rhine is conventionally measured in Rhine-kilometers (Rheinkilometer), a scale introduced in 1939 which runs from the Old Rhine Bridge at Constance (0 km) to Hoek van Holland (1036.20 km). The river length is significantly shortened from the river's natural course due to number of canalisation projects completed in the 19th and 20th century.[note 7] The total length of the Rhine, to the inclusion of Lake Constance and the Alpine Rhine is more difficult to measure objectively; it was cited as 1,232 kilometres (766 miles) by the Dutch Rijkswaterstaat in 2010.[note 1]

Answer: Hoek van Holland


Question: proper question: What is the hottest temperature record for Fresno? 
 disfluent question: What is the annual temperature on record for Fresno no the hottest I mean? 
 context: The official record high temperature for Fresno is 115 °F (46.1 °C), set on July 8, 1905, while the official record low is 17 °F (−8 °C), set on January 6, 1913. The average windows for 100 °F (37.8 °C)+, 90 °F (32.2 °C)+, and freezing temperatures are June 1 thru September 13, April 26 thru October 9, and December 10 thru January 28, respectively, and no freeze occurred between in the 1983/1984 season. Annual rainfall has ranged from 23.57 inches (598.7 mm) in the “rain year” from July 1982 to June 1983 down to 4.43 inches (112.5 mm) from July 1933 to June 1934. The most rainfall in one month was 9.54 inches (242.3 mm) in November 1885 and the most rainfall in 24 hours 3.55 inches (90.2 mm) on November 18, 1885. Measurable precipitation falls on an average of 48 days annually. Snow is a rarity; the heaviest snowfall at the airport was 2.2 inches (0.06 m) on January 21, 1962.

Answer: 115 °F


Question: proper question: What kind of structures are typical in living lagerstatten? 
 disfluent question: Which type of or actually what kind of structures are typical in living lagerstatten? 
 context: Because of their soft, gelatinous bodies, ctenophores are extremely rare as fossils, and fossils that have been interpreted as ctenophores have been found only in lagerstätten, places where the environment was exceptionally suited to preservation of soft tissue. Until the mid-1990s only two specimens good enough for analysis were known, both members of the crown group, from the early Devonian (Emsian) period. Three additional putative species were then found in the Burgess Shale and other Canadian rocks of similar age, about 505 million years ago in the mid-Cambrian period. All three apparently lacked tentacles but had between 24 and 80 comb rows, far more than the 8 typical of living species. They also appear to have had internal organ-like structures unlike anything found in living ctenophores. One of the fossil species first reported in 1996 had a large mouth, apparently surrounded by a folded edge that may have been muscular. Evidence from China a year later suggests that such ctenophores were widespread in the Cambrian, but perhaps very different from modern species – for example one fossil's comb-rows were mounted on prominent vanes. The Ediacaran Eoandromeda could putatively represent a comb jelly.

Answer:
None


