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]: Hades ( ; Greek : " Ha ́ de ̄ s " ; Α ̔ ́ ιδης " Ha ́ ide ̄ s " ) , in the ancient Greek religion and myth , is the god of the dead and the king of the underworld , with which his name became synonymous .
[A]: Hades ( , " Ha ́ ide ̄ s " ) is the god of the dead and the king of the underworld in ancient Greek religion and myth .


[Q]: Silliness is defined as engaging in " a ludicrous folly " , showing a " lack of good sense or judgment " , or " the condition of being frivolous , trivial , or superficial " .
[A]: Silliness is when a person acts like a fool , or shows a lack of good sense or judgment .


[Q]: In typography , a serif is a small line or stroke regularly attached to the end of a larger stroke in a letter or symbol within a particular font or family of fonts .
[A]:
A serif is a term in typography .