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: in 1843 , john couch adams calculated the orbit of a hypothesized eighth planet that would account for uranus 's motion.
Output:
in 1843 , john couch adams calculated the orbit of a hypothesized eighth planet and this helped account for uranus 's motion.