This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

Passage: Whitehead pointed to the limitations of language as one of the main culprits in maintaining a materialistic way of thinking, and acknowledged that it may be difficult to ever wholly move past such ideas in everyday speech. After all, each moment of each person's life can hardly be given a different proper name, and it is easy and convenient to think of people and objects as remaining fundamentally the same things, rather than constantly keeping in mind that each thing is a different thing from what it was a moment ago. Yet the limitations of everyday living and everyday speech should not prevent people from realizing that "material substances" or "essences" are a convenient generalized description of a continuum of particular, concrete processes. No one questions that a ten-year-old person is quite different by the time he or she turns thirty years old, and in many ways is not the same person at all; Whitehead points out that it is not philosophically or ontologically sound to think that a person is the same from one second to the next. Question: Whitehead's main philosophy on humans changing is what?
each thing is a different thing from what it was a moment ago

Passage: Prior to Confederation in 1867, residents of the colonies in what is now Canada served as regular members of French and British forces and in local militia groups. The latter aided in the defence of their respective territories against attacks by other European powers, Aboriginal peoples, and later American forces during the American Revolutionary War and War of 1812, as well as in the Fenian raids, Red River Rebellion, and North-West Rebellion. Consequently, the lineages of some Canadian army units stretch back to the early 19th century, when militia units were formed to assist in the defence of British North America against invasion by the United States. Question: The forces of what countries did people serve before the unification?
French and British forces

Passage: His first professional TV job came when he was hired to direct one of the segments for the 1969 pilot episode of Night Gallery. The segment, "Eyes," starred Joan Crawford; she and Spielberg were reportedly close friends until her death. The episode is unusual in his body of work, in that the camerawork is more highly stylized than his later, more "mature" films. After this, and an episode of Marcus Welby, M.D., Spielberg got his first feature-length assignment: an episode of The Name of the Game called "L.A. 2017". This futuristic science fiction episode impressed Universal Studios and they signed him to a short contract. He did another segment on Night Gallery and did some work for shows such as Owen Marshall: Counselor at Law and The Psychiatrist, before landing the first series episode of Columbo (previous episodes were actually TV films). Question: What genre was 'LA 2017'?

futuristic science fiction