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]: Keith Richards ( born 18 December 1943 ) is an English musician , singer , and songwriter , best known as the co-founder , guitarist , secondary vocalist , and co-principal songwriter of the Rolling Stones .
[A]: Keith Richards ( born 18 December 1943 ) is an English guitarist best known as a founder member of the Rolling Stones .

[Q]: A language isolate , in the absolute sense , is a natural language with no demonstrable genealogical ( or " genetic " ) relationship with other languages , one that has not been demonstrated to descend from an ancestor common with any other language .
[A]: A language isolate is a language that is not known to be related to any other language .

[Q]: Vacuoles also play a major role in autophagy , maintaining a balance between biogenesis ( production ) and degradation ( or turnover ) , of many substances and cell structures in certain organisms .
[A]:
Vacuoles are also important in autophagy , keeping a balance between making and getting rid of many things in cells and organisms .