Given a text, write a compressed version of it in a single sentence.

[Q]: For a membership gift of just $15, you will receive a full year of the world's most beautiful nature magazine, NATIONAL WILDLIFE. With its spectacular, full-color photographs, compelling features and updates on the important work your membership helps us to accomplish, this award-winning publication alone is worth the modest gift!
[A]: For a membership of $15, you will gain a full year of the world's most beautiful nature magazine, National Wildlife, because you donation helps us achieve may wonderful things.

[Q]: But that does not mean that such a square cannot exist.
[A]: Such a square can exist.

[Q]: Many years ago, a linguistic scholar counted all of the languages then spoken of which he had evidence. The total was approximately 2800, but that is probably only a vague estimate: he undoubtedly missed some; some have sprung up since his time ( modern Hebrew, for instance ); and some have vanished.
[A]:
Many years ago, a linguistic scholar counted all 2800 spoken languages of which he had evidence. But that's probably only a vague estimate. Some were missed, have sprung up since then (such as modern Hebrew), or have vanished.