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.

The Oxford English Dictionary ( OED ) is the principal historical dictionary of the English language , published by Oxford University Press ( OUP ) .
The Oxford English Dictionary ( or OED ) is a dictionary .

The AFC Champions League ( abbreviated as ACL ) , commonly known as the Asian Champions League , is an annual continental club football competition organised by the Asian Football Confederation ( AFC ) .
The AFC Champions League is a football competition between the best club teams in Asia .

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 .