TASK DEFINITION: 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.
PROBLEM: Tim Bergling ( -RSB- ; 8 September 1989 – 20 April 2018 ) , known professionally as Avicii ( , -RSB- ) , was a Swedish DJ , electronic musician , and songwriter who specialized in audio programming , remixing and record producing .

SOLUTION: Tim Bergling ( -RSB- ; 8 September 1989 – 20 April 2018 ) , known professionally as Avicii , was a Swedish musician , DJ , remixer , and record producer .

PROBLEM: An indentured servant or indentured laborer is an employee ( indenturee ) within a system of unfree labor who is bound by a signed or forced contract ( indenture ) to work for a particular employer for a fixed time .

SOLUTION: An indentured servant was a worker in a contract with an employer for a certain length of time .

PROBLEM: Shell Oil Company is the United States-based wholly owned subsidiary of Royal Dutch Shell , transnational corporation " oil major " of Anglo-Dutch origins , which is amongst the largest oil companies in the world .

SOLUTION:
Shell Oil Company is the United States-based subsidiary of Royal Dutch Shell .