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.

No specific year can be cited as the origin of the blues , largely because the style evolved over a long period and existed in approaching its modern form before the term " blues " was introduced and before the style was thoroughly documented .
No year can be cited as the origin , because the style evolved over a long period .

Freyberg had informed his superiors that he believed , given the circumstances , there was no better than a 50 per cent chance of success for the offensive .
Freyberg thought there was only a 50 % chance of success for the attack .

The midnight sun is a natural phenomenon that occurs in the summer months in places north of the Arctic Circle or south of the Antarctic Circle , when the Sun remains visible at the local midnight .

The sun above the horizon at midnight in the arctic or antarctic summer .

