Problem:Passage: The song's first verse and chorus are recited annually at the Kentucky Derby. Colonel Matt Winn introduced the song as a derby tradition. As early as 1930, it was played to accompany the Post Parade; the University of Louisville Marching Band has played the song for all but a few years since 1936. In 1982, Churchill Downs honored Foster by establishing the Stephen Foster Handicap. The University of Kentucky, University of Louisville, Murray State University, Eastern Kentucky University, and Western Kentucky University bands play the song at their schools' football and basketball games.

Question: Based on this passage, who plays my old kentucky home at the derby?
Solution:OK... The important part for answering this question is: As early as 1930, it was played to accompany the Post Parade; the University of Louisville Marching Band has played the song for all but a few years since 1936.
the University of Louisville Marching Band.

Problem:Although the disk contains dust that obscures the view in some wavelengths, the halo component does not. Active star formation takes place in the disk (especially in the spiral arms, which represent areas of high density), but does not take place in the halo, as there is little gas cool enough to collapse into stars. Open clusters are also located primarily in the disk.

Answer this question based on the passage: where does most star formation take place in the milky way?
Solution:OK... This is the relevant information: Active star formation takes place in the disk (especially in the spiral arms, which represent areas of high density), but does not take place in the halo, as there is little gas cool enough to collapse into stars.
the disk ( especially in the spiral arms , which represent areas of high density ).

Problem:Passage: In 1297, with the Portuguese part of the reconquista completed, King Dinis of Portugal took personal interest in exports and in 1317 he made an agreement with Genoese merchant sailor Manuel Pessanha (Pesagno), appointing him first admiral of the Portuguese navy, with the goal of defending the country against Muslim pirate raids. Outbreaks of bubonic plague led to severe depopulation in the second half of the 14th century: only the sea offered alternatives, with most population settling in fishing and trading coastal areas. Between 1325 and 1357 Afonso IV of Portugal encouraged maritime commerce and ordered the first explorations. The Canary Islands, already known to the Genoese, were claimed as officially discovered under patronage of the Portuguese but in 1344 Castile disputed them, expanding their rivalry into the sea.

Question: Based on this passage, the individual most responsible for initiating portuguese voyages of exploration was?
Solution:
OK... To answer the above question, the relevant sentence is: Between 1325 and 1357 Afonso IV of Portugal encouraged maritime commerce and ordered the first explorations.
Afonso IV of Portugal.