[Q]: Sentence: The commutator switches power to the coils as the rotor turns, keeping the magnetic poles of the rotor from ever fully aligning with the magnetic poles of the stator field, so that the rotor never stops (like a compass needle does), but rather keeps rotating as long as power is applied. Question: What non-motor device demonstrates why a commutator is needed? OPTIONS:
- yes
- no
++++++++++
[A]: yes

Q: Does "The most important difference was that, while in most European countries the nobility lost power as the ruler strove for absolute monarchy, in Poland the reverse process occurred: the nobility actually gained power at the expense of the king, and the political system evolved into an oligarchy." provide a valid answer to "What did the political system eventually evolve into?"?
OPTIONS:
- yes
- no
A: yes

Problem: Does "The opening quote by the 19th-century essayist Charles Lamb reads: "Lawyers, I suppose, were children once."" answer the question "Who does Charles Lamb speculate were once children?" OPTIONS:
- yes
- no

A: yes

Does the sentence "Though sexual attraction, behavior, and identity are all components of sexual orientation, if a person defined by one of these dimensions were congruent with those defined by another dimension it would not matter which was used in assessing orientation, but this is not the case." provide a valid answer to the question "What is there little coherent relationships between?" OPTIONS:
- yes
- no

A: no

Question:
Choose your answer: Is "She also performed the American national anthem at his second inauguration, singing along with a pre-recorded track." a good answer to the question "Beyonce sang which song during the 2009 presidential inauguration?" OPTIONS:
- yes
- no
Answer:
no

[Q]: Sentence: Local city councils are elected by public vote to four-year terms in all cities and villages of Iran. Question: How long are the terms of local city councils that are present in all Iranian cities and villages? OPTIONS:
- yes
- no
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[A]:
yes