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.

Question: Possible Duplicate: Is a company always plural, or are small companies singular? When I'm referring to a group of multiple things, should it be considered singular or plural for the purposes of applying a verb to it? For example, which is correct in the examples below? A sentence is a group of words that is followed by a period. A sentence is a group of words that are followed by a period. The group of people constitutes a jury. The group of people constitute a jury. A group of crows is called a 'murder'. A group of crows are called a 'murder'. My instinct is that it depends on whether the verb is referncing the group itself or the members of the group directly, but is that right? 
Answer: According to the OALD, group can actually serve as either a plural or singular noun. The category they give is "countable + singular or plural verb". So, an example of correct use is: A group of us is/are going to the theatre this evening. For any of your examples, both is and are can be used. I think the difference between them is as you say: use is when you are referring to the group, and use are when you are referring to the members of a given group. This page on when to use "group" as plural from Washington State University backs this up, saying: When the group is being considered as a whole, it can be treated as a single entity: "the group was ready to go on stage." But when the individuality of its members is being emphasized, "group" is plural: "the group were in disagreement about where to go for dinner." To analyze your given examples, here are some notes: A sentence is a group of words that is followed by a period. Use this form if you're talking about the group itself. That is, a sentence is a group of words followed by a period. A sentence is a group of words that are followed by a period. This implies that "This. Is. A. Sentence" is a sentence. The group of people constitutes a jury. The group of people constitute a jury. This would be more correct, since you are describing the nature of the group. A group of crows is called a 'murder'. This would be correct, since you're again describing an entire group. A group of crows are called a 'murder'.
yes

Question: This question, "Discrete Units of a Continuous Quantity", asks whether units of a continuous quantity should be spoken of as discrete or continuous. The top answer states The rule is simple, and you obviously know it: discrete quantities require the use of "fewer" and continuous quantities require the use of "less". Calorie, as a unit, requires the use of "fewer". Energy, as a continuum, requires the use of "less". "Fewer calories means less energy." I do not understand the logic here though. Calorie is a unit, yes, but it is a continuous unit (it is possible to have half a calorie, or 4.582394 calories). Since a calorie is such a small unit of energy compared to what it is usually used for (food energy and human metabolism), it is very seldom expressed in a fractional form and instead is rounded (usually to the nearest 10 or higher). Why then should "fewer" be used with calorie instead of "less"? Is there another relevant rule than just "continuous quantities use "less" and discrete quantities use "fewer"? 
Answer: Divisibility does not mean something is not countable or that it isn't a discrete unit, requiring use of 'fewer'. A calorie is not 'energy' it is a 'unit of energy', and therefore, countable and discrete, even though it's divisible. It's divisible into further discrete units - half a calorie, in this case, is still a discrete unit. Using another example, you would have 'fewer' jars of peanut butter, even though someone might have eaten half of the peanut butter in some of the jars. You could even cut the entire jar in half, none of that matters, you still have fewer jars. And you also have less peanut butter, in the same way that fewer calories means less energy. The calorie corresponds to the jar, not to the peanut butter (that would correspond to the energy the calorie measures). It doesn't matter that there is 'less' peanut butter in some jars than in others any more than it would matter if some of the jars were a gallon in size, and some were just single-use jars with two tablespoons of peanut butter inside. Put another way, your 'half a calorie' is still a unit, and thus, you'd still say 'fewer calories'.
yes

Question: I am looking for a word or phrase which can be used in the sentence: It is a rather old, but _________________ technology. The word or phrase should address a technology that is totally investigated, researched in detail, and thoroughly optimised, so there is nothing more to find out or improve. 
Answer: There is a common acronym for this, used in computing and engineering, which is COTS - "commercial off-the-shelf" - i.e. you can buy it ready made without having to do any research to invent it yourself, and without needing to understand every detail of how it works. It is rather old, but COTS technology.

no