instruction:
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.
question:
In economics , utility is the satisfaction or benefit derived by consuming a product ; thus the marginal utility of a goods or service is the change in the utility from an increase in the consumption of that good or service .
answer:
Marginal utility is a concept from economics that describes the change in utility from consuming more or less of a good or service .


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


question:
Docklands Light Railway rolling stock is the passenger trains and service vehicles ( collectively known as ' rolling stock ' ) used on the Docklands Light Railway ( DLR ) , which serves the London Docklands area in the east of London .
answer:

Docklands Light Railway rolling stock means the passenger trains and service vehicles used on the Docklands Light Railway ( DLR ) in London , England .