In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

[Q]: The subsolar point on a planet is when its sun looks like it is directly overhead ( in zenith ) .
[A]: The subsolar point on a planet is the point at which its sun is perceived to be directly overhead ( at the zenith ) ; that is , where the sun 's rays strike the planet exactly perpendicular to its surface .


[Q]: Bradford is a major city in West Yorkshire , England .
[A]: The City of Bradford is a local government district of West Yorkshire , England , with the status of a city and metropolitan borough .


[Q]: The Battle of Marathon was a watershed in the Greco-Persian wars , showing the Greeks that the Persians could be beaten .
[A]:
The Battle of Marathon was a watershed in the Greco-Persian wars , showing the Greeks that the Persians could be beaten ; the eventual Greek triumph in these wars can be seen to have begun at Marathon .