Per my opinion, every answer (as of 2017-04-26 06:47 AM UTC) is OK, because:
(1) They provide laconic and complete answer.
(2) They provide reference.
But (supposedly) bytebuster put the following banner near almost every answer:
We're looking for long answers that provide some explanation and context. Don't just give a one-line answer; explain why your answer is right, ideally with citations. Answers that don't include explanations may be removed.
Don't you consider the banners to be unreasonable?
Per my opinion, we need good answers, not long answers. Short answers are often bad, but not always. It makes sense to put this banner only on answers that are short-and-bad, but not on short-but-good. (If not rephrase it at all.)
Per my opinion, "Just say X" is (most always) a bad answer; but "The A dictionary/book/linguist suggests to say X" is often ok.