TASK DEFINITION: In this task, you will be shown a correct English sentence. You need to generate an incorrect form of the input sentence.
PROBLEM: They are clean and big and so on .

SOLUTION: They are clean and big and so on .

PROBLEM: Hence , German students will have to work harder , think much more and thus become even more skilled .

SOLUTION: Hence , German students will have to work harder , think much more and thus become even more skilled .

PROBLEM: I know Bill Gates , president of Windows Media , is the richest man in the world .

SOLUTION:
I know Bill Gates , president of Window Media , is the best of the World Rich .