question: OPTIONS:
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This is not surprising since the selective forces of climate are probably the primary forces of nature that have shaped human races with regard not only to skin color and hair form but also the underlying bony structures of the nose, cheekbones, etc.
What are probably the primary forces of nature which shaped human races?

answer: yes

[Q]: Sentence: Logical empiricism (also logical positivism or neopositivism) was an early 20th-century attempt to synthesize the essential ideas of British empiricism (e.g. a strong emphasis on sensory experience as the basis for knowledge) with certain insights from mathematical logic that had been developed by Gottlob Frege and Ludwig Wittgenstein. Question: What did logical empiricism try to combine with mathematical logic? OPTIONS:
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++++++++++
[A]: yes

Q: Does "Both finalists found success after the show, but Aiken out-performed Studdard's coronation song "Flying Without Wings" with his single release from the show "" provide a valid answer to "What was the name of Studdard's coronation song?"?
OPTIONS:
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A: yes

Problem: Does "Following a headlining set at Coachella 2011 that was described by The Hollywood Reporter as "one of greatest hip-hop sets of all time", West released the collaborative album Watch the Throne with Jay-Z." answer the question "What festival did Kanye headline in 2011?" OPTIONS:
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A: yes

Does the sentence "In other words, Aristotle advocated the rule of law:" provide a valid answer to the question "Under what rule did Aristotle believe a nation should be led?" OPTIONS:
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A: yes

Does the sentence "Both Gartner and IDC estimated that in the third quarter of 2006, HP shipped more units worldwide than Dell did." provide a valid answer to the question "What was the rate of decline that Dell experienced in PC shipments?" OPTIONS:
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A:
no