Problem: Time:

Time has historically been closely related with space, the two together merging into spacetime in Einstein's special relativity and general relativity. According to these theories, the concept of time depends on the spatial reference frame of the observer, and the human perception as well as the measurement by instruments such as clocks are different for observers in relative motion. For example, if a spaceship carrying a clock flies through space at (very nearly) the speed of light, its crew does not notice a change in the speed of time on board their vessel because everything traveling at the same speed slows down at the same rate (including the clock, the crew's thought processes, and the functions of their bodies). However, to a stationary observer watching the spaceship fly by, the spaceship appears flattened in the direction it is traveling and the clock on board the spaceship appears to move very slowly.

What have a crew's thought processes usually been related to?
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A: unanswerable

Problem: Philadelphia:

For much of Philadelphia's history, the typical home has been the row house. The row house was introduced to the United States via Philadelphia in the early 19th century and, for a time, row houses built elsewhere in the United States were known as "Philadelphia rows". A variety of row houses are found throughout the city, from Victorian-style homes in North Philadelphia to twin row houses in West Philadelphia. While newer homes are scattered throughout the city, much of the housing is from the early 20th century or older. The great age of the homes has created numerous problems, including blight and vacant lots in many parts of the city, while other neighborhoods such as Society Hill, which has the largest concentration of 18th-century architecture in the United States, have been rehabilitated and gentrified.

Name a type of row house in the city?
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A: Victorian-style homes in North Philadelphia to twin row houses in West Philadelphia

Problem: Guam:

The Northern Mariana Islands had become a Japanese protectorate before the war. It was the Chamorros from the Northern Marianas who were brought to Guam to serve as interpreters and in other capacities for the occupying Japanese force. The Guamanian Chamorros were treated as an occupied enemy by the Japanese military. After the war, this would cause resentment between the Guamanian Chamorros and the Chamorros of the Northern Marianas. Guam's Chamorros believed their northern brethren should have been compassionate towards them, whereas having been occupied for over 30 years, the Northern Mariana Chamorros were loyal to Japan.

Who were the Guamanian Chamorro loyal to?
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A: unanswerable

Problem: Black people:

Afro-Spaniards are Spanish nationals of West/Central African descent. They today mainly come from Angola, Brazil, Cameroon, Cape Verde, Equatorial Guinea, Ghana, Gambia, Guinea-Bissau, Mali, Nigeria and Senegal. Additionally, many Afro-Spaniards born in Spain are from the former Spanish colony Equatorial Guinea. Today, there are an estimated 683,000 Afro-Spaniards in Spain.

Which Spanish colony do Afro-Spaniards reside?
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A:
Equatorial Guinea