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.

Ex Input:
Sentence1: Ribosomes are small organelles where proteins are made. 
Sentence2: Ribosomes are assembled inside the nucleus.

Ex Output:
Ribosomes


Ex Input:
Sentence1: Infection is what ultimately leads to death. 
Sentence2: scraping oneself on a contaminated object may cause death.

Ex Output:
death


Ex Input:
Sentence1: For example, Samsung sells a cell phone that supports voice dialing. 
Sentence2: Samsung can cause people to become distracted.

Ex Output:

Samsung