Definition: In this task, you will be shown an incorrect English sentence. You need to generate a corrected form of the input sentence.
Input: When you understand the concepts and ideas is up to you to prove them , to see if they are really what you have been told , i think this is the main reason why students prefere facts rather than just understanding ideas and concepts . 

When you understand the concepts and ideas it is up to you to prove them , and see if they are really what you have been told ; I think this is the main reason why students prefer facts rather than just understanding ideas and concepts . 