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.

[Q]: Spontaneous symmetry breaking is a spontaneous process of symmetry breaking , by which a physical system in a symmetric state ends up in an asymmetric state .
[A]: Spontaneous symmetry breaking is a way symmetry breaks in a physical system .


[Q]: The peninsula has a high density of volcanoes and associated volcanic phenomena , with 29 active volcanoes being included in the six UNESCO World Heritage List sites in the Volcanoes of Kamchatka group , most of them on the Kamchatka Peninsula .
[A]: 29 active volcanoes are included in six UNESCO World Heritage List sites .


[Q]: The Boeing 737 is an American short- to medium-range twinjet narrow-body airliner developed and manufactured by Boeing Commercial Airplanes .
[A]:
The Boeing 737 is a jet airliner .