Generate an overlapping word between the given two sentences. When you find the overlapping words, they don't have to match exactly, e.g., "survival" and "survive" are valid overlapping words. Little words like "the" or "of" don't count! You must generate significant words which are not the stop words.

Input: Consider Input: Sentence1: Ozone depletion results in higher levels of UV radiation reaching Earth. 
Sentence2: less ozone means more ultraviolet light.

Output: Ozone


Input: Consider Input: Sentence1: Cancer is a disease in which cells divide out of control. 
Sentence2: Cancer is a disease in which cells grow and divide rapidly.

Output: Cancer


Input: Consider Input: Sentence1: Digestion is the process of breaking down food into components the body can absorb. 
Sentence2: Nutrients are absorbed by the intestines and if the walls are coated, fewer nutrients are absorbed.


Output: absorb