Teacher: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.
Teacher: Now, understand the problem? Solve this instance: An expert is an individual recognized as a reliable source of knowledge or skill in a particular field .
Student:
Informally , an expert is someone widely recognized as a reliable source of technique or skill whose faculty for judging or deciding rightly , justly , or wisely is accorded authority and status by peers or the public in a specific well-distinguished domain .