Definition: In this task, you're given a sentence and your task is to generate a simplified sentence that focuses on lexical paraphrasing from the original sentence given in the input.
Input: historically mills were powered by hand -lrb- mortar and pestle -rrb- , working animal , wind -lrb- windmill -rrb- or water -lrb- watermill -rrb-.
Output:
historically , mills were powered by hand -lrb- mortar and pestle -rrb- , working animal , wind -lrb- windmill -rrb- , or water -lrb- watermill -rrb-.