TASK DEFINITION: Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.
PROBLEM: Context: Rudolf Teschner (16 February 1922, Potsdam -- 23 July 2006, Berlin-Steglitz) was a German chess master and writer. 
 Question: What nationality of Rudolf Teschner?

SOLUTION: german

PROBLEM: Context: Louis Philippe I (6 October 1773 -- 26 August 1850) was King of the French from 1830 to 1848 as the leader of the Orleanist party. 
 Question: What nationality was Louis Philippe I?

SOLUTION: french

PROBLEM: Context: The health benefits of leisure-time physical activity are well known, however the effects of engaging in competitive sports on health are uncertain. This literature review examines mortality and longevity of elite athletes and attempts to understand the association between long-term vigorous exercise training and survival rates. Fourteen articles of epidemiological studies were identified and classified by type of sport. Life expectancy, standardised mortality ratio, standardised proportionate mortality ratio, mortality rate, and mortality odds ratio for all causes of death were used to analyse mortality and longevity of elite athletes. It appears that elite endurance (aerobic) athletes and mixed-sports (aerobic and anaerobic) athletes survive longer than the general population, as indicated by lower mortality and higher longevity. Lower cardiovascular disease mortality is likely the primary reason for their better survival rates. On the other hand, there are inconsistent results among studies of power (anaerobic) athletes. When elite athletes engaging in various sports are analysed together, their mortality is lower than that of the general population. In conclusion, long-term vigorous exercise training is associated with increased survival rates of specific groups of athletes. 
 Question: What is the life expectancy of professional athletes in respect to the general population?

SOLUTION:
no clear results indicating improved life expectancy in professional athletes