Given the Question and Answer pair, detect whether the answer is acceptable or not. Denote acceptable answer as "yes", otherwise denote as "no". An acceptable answer is consistent with the context in question, detailed, long, and uses general knowledge of English. Answers that are not definite and suggest a variety of options are not acceptable answers.

[Q]: Question: Is there a semantic difference between engine and motor? In some cases, would the use of one or the other word be technically incorrect? 
Answer: The real difference, is the fact that "motors" run on electricity, while "engines" run on combustion. However, many people interchange the usage of these words: On the rare occasions we encounter one, we refer to a steam locomotive as an engine, the same word that we give to the motive power of an aircraft. But all electrical devices are driven by motors. In Britain at least, one's personal transport is a motor car (with compounds such as motor trade, motor vehicle and motor sport), even though it's always powered by an engine. Small boats may have outboard motors and then are often called motor boats. From a mechanic: So, what is the difference between an engine and a motor? Motors are electric. Electricity powers motors. Engines are powered by come sort of pressure or combustion, ie: steam engines, automobile engines, diesel engines. Pretty simple, really.
[A]: no


[Q]: Question: For example In Sim Lim Square cheat cases, a person paid $1k for iPhone insurance. He "agreed" to buy it because the price was not clearly written. In some restaurants, prices are not written clearly and people can then be charged exorbitant prices. Insurance costs can vary by up to 100 times because the cost is simply not written clearly. Many politicians use deceptive language. Also, they tend to tell only the benefits without telling the negatives. Say you are a scientist. You have 10 studies supporting your theory and 90 studies showing you are wrong. You only quote the 10 studies to people that can't expect. All of these are deceptions that would make people choose really really "bad deals". Is there a word to describe such deceptions? Lying? Sophism? Fraud? Scam? Pull a fast one? What? 
Answer: Mislead/misleading One can be misled into thinking something, even if no lies are involved. Doesn't necessarily rule out lying though. The restaurant misled its customers by hiding information about extra charges.
[A]: yes


[Q]: Question: How can you explain that this double negation is not a double negation? Is there a rule in English about this kind of sentence? PS / Do I have to mention Pink Floyd Copyright ? :-) Edit : Since there are a lot of Pink Floyd related explanation, I'll bring a Freddy Mercury one : "I don't have time for no monkey business", which I also understand as "I don't have time for monkey business". Am I right ? 
Answer: Doubled negatives are often used casually in certain dialects to indicate negative concord, an intensification of negation rather than an inversion of it. This typically happens when both words involved are simple negatives, and is most common with no standing in for a, an, or any alongside don't or ain't. So you can safely assume that He isn't not going to the concert. is double negation proper, because it has emphasis, as is She wasn't unimpressed. because this is litotes, whereas I ain't no hillbilly. is negative concord, because it's obviously casual, and uses ain't no in place of am no or am not a. (It's also a patent lie, but that's beside the point.).
[A]:
yes


