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:
There may be several minimum spanning trees of the same weight ; in particular , if all the edge weights of a given graph are the same , then every spanning tree of that graph is minimum .
answer:
In a graph where all the edges have the same weight , every tree is a minimum spanning tree .


question:
Rebecca Renee Black ( born June 21 , 1997 ) is an American YouTuber and singer who gained extensive media coverage when the music video for her 2011 single " Friday " went viral on YouTube and other social media sites .
answer:
Rebecca Black ( born June 21 , 1997 ) is an American pop singer who gained fame for her 2011 single , Friday .


question:
Nelson is a major liberal activist and the co-chair of the advisory board of the National Organization for the Reform of Marijuana Laws ( NORML ) , which is in favor of marijuana legalization .
answer:

Nelson is the co-chair of the National Organization for the Reform of Marijuana Laws ( NORML ) advisory board .