Write an inquisitive question about a specific text span in a given sentence such that the answer is not in the text.
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Question: Sentence: Under picture - perfect blue skies , the throng assembled around the base of the Lincoln Memorial — where Martin Luther King Jr . delivered his iconic " I Have a Dream " speech — and listened to speaker after speaker implore them to become active participants , not bystanders , in the quest of racial equality and harmony .<sep>Span: picture - perfect blue skies ,

Answer: why does this matter?


Question: Sentence: His assertion that the mystery man didn ’ t look anything like modern Native Americans infuriated Northwest Tribes , who consider the remains those of an ancestor and sued for the right to rebury what they call the Ancient One .<sep>Span: infuriated

Answer: Why were they infuriated over this claim?


Question: Sentence: The fresh estimates are also another way of measuring whether the recession , which clamped down on state - to - state movement , has loosened its grip on American migration .<sep>Span: estimates

Answer:
Are the statistics previously mentioned actual numbers or just estimates?


