In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

[EX Q]: The Ruhr ( ; -RSB- ) , also referred to as Ruhr district , Ruhr region , Ruhr area or Ruhr valley , is a polycentric urban area in North Rhine-Westphalia , Germany .
[EX A]: The Ruhr Area ( " " ) is an urban area in North Rhine-Westphalia , Germany .

[EX Q]: Whereas rodents have gnawing incisors that grow throughout life , the teeth of shrews wear down throughout life , a problem made more extreme because they lose their milk teeth before birth , so have only one set of teeth throughout their lifetimes .
[EX A]: Unlike rodents , which have gnawing incisors that grow throughout life , the teeth of shrews wear down throughout life , and they lose their milk teeth before birth .

[EX Q]: As launch customer , and because of its early involvement before placing a formal order , Pan Am was able to influence the design and development of the 747 to an extent unmatched by a single airline before or since .
[EX A]:
Since Pan Am was the launch customer , Pan Am had a big say in the design and making of the 747 .