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.
Q: Plagiarism is copying another person 's ideas , words or writing and pretending that they are one 's own work .
A: 
Plagiarism is the " wrongful appropriation " and " stealing and publication " of another author 's " language , thoughts , ideas , or expressions " and the representation of them as one 's own original work .