## question
Context: The Mississippi River is the chief river of the second-largest drainage system on the North American continent, second only to the Hudson Bay drainage system. Flowing entirely in the United States (although its drainage basin reaches into Canada), it rises in northern Minnesota and meanders slowly southwards for 2,320 miles (3,730 km) to the Mississippi River Delta at the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains all or parts of 31 U.S. states and 2 Canadian provinces between the Rocky and Appalachian Mountains. The Mississippi ranks as the fourth-longest and fifteenth-largest river in the world by discharge. The river either borders or passes through the states of Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana.

Question: where does the mississippi river start and stop?
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To answer the question, consider the following: Flowing entirely in the United States (although its drainage basin reaches into Canada), it rises in northern Minnesota and meanders slowly southwards for 2,320 miles (3,730 km) to the Mississippi River Delta at the Gulf of Mexico.
So the answer must be rises in northern Minnesota and meanders slowly southwards for 2,320 miles ( 3,730 km ) to the Mississippi River Delta at the Gulf of Mexico

## question
Passage: The Ural Mountains (Russian: , tr. Uralskiye gory; IPA: ( raljskjj gor); Bashkir: , Ural tauzar ), or simply the Urals, are a mountain range that runs approximately from north to south through western Russia, from the coast of the Arctic Ocean to the Ural River and northwestern Kazakhstan. The mountain range forms part of the conventional boundary between the continents of Europe and Asia. Vaygach Island and the islands of Novaya Zemlya form a further continuation of the chain to the north into the Arctic Ocean.

Question: Based on this passage, where is the ural mountains located on a map?
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The important part for answering this question is: The Ural Mountains (Russian: , tr. Uralskiye gory; IPA: ( raljskjj gor); Bashkir: , Ural tauzar ), or simply the Urals, are a mountain range that runs approximately from north to south through western Russia, from the coast of the Arctic Ocean to the Ural River and northwestern Kazakhstan.
So the answer must be runs approximately from north to south through western Russia , from the coast of the Arctic Ocean to the Ural River and northwestern Kazakhstan

## question
Epithelium (epi-+ thele +-ium) is one of the four basic types of animal tissue, along with connective tissue, muscle tissue and nervous tissue. Epithelial tissues line the cavities and surfaces of blood vessels and organs throughout the body.

Where can epithelial tissue be found in the human body?
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To answer this question, we should know that: Epithelial tissues line the cavities and surfaces of blood vessels and organs throughout the body.
So the answer must be the cavities and surfaces of blood vessels and organs

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Tuberculosis (TB) vaccines are vaccinations intended for the prevention of tuberculosis. Immunotherapy as a defence against TB was first proposed in 1890 by Robert Koch. Today, the only effective tuberculosis vaccine in common use is bacilli Calmette-Guerin (BCG), first used in 1921. About three out of every 10,000 people who get the vaccine experience side effects, which are usually minor except in severely immuno-depressed individuals. While BCG immunization provides fairly effective protection for infants and young children, (including defence against TB meningitis and miliary TB), its efficacy in adults is variable, ranging from 0 % to 80 %. Several variables have been considered as responsible for the varying outcomes. Demand for TB immunotherapy advancement exists because the disease has become increasingly drug-resistant.

Answer this question based on the passage: what is the name of the vaccine for tuberculosis?
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To answer the above question, the relevant sentence is: Today, the only effective tuberculosis vaccine in common use is bacilli Calmette-Guerin (BCG), first used in 1921.
So the answer must be Calmette - Guerin ( BCG )