In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

[EX Q]: In mathematics a loss function or cost function is a mathematical function that maps an event , or the values of one or more variables onto a real number .
[EX A]: In mathematical optimization and decision theory , a loss function or cost function is a function that maps an event or values of one or more variables onto a real number intuitively representing some " cost " associated with the event .

[EX Q]: In computer science , a loop counter is a variable that controls how many repetitions the loop will do .
[EX A]: In -LSB- computer programming -RSB- a loop counter is the -LSB- variable ( programming ) -PIPE- variable -RSB- that controls the iterations of a loop ( a computer -LSB- programming language -RSB- construct ) .

[EX Q]: A ravine usually has steep sides , and they are 20-70 % in gradient .
[EX A]:
A ravine is generally a fluvial slope landform of relatively steep ( cross-sectional ) sides , on the order of twenty to seventy percent in gradient .