Definition: 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: Sentence1: For example, the nuclear membrane keeps the DNA inside of the nucleus. 
Sentence2: RNA is a small molecule that can squeeze through pores of the nucleus that holds DNA.

DNA