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: Damage is intensified by moisture stress during drought. 
Sentence2: low amounts of rainfall intensify damage during drought.

Output: Damage


Input: Consider Input: Sentence1: chemical splashing can cause harm to humans. 
Sentence2: chemical splashing can cause harm to animals.

Output: cause


Input: Consider Input: Sentence1: Modern examples are jellyfish, flat worms, and annelid worms. 
Sentence2: jellyfish can regrow segments.


Output: jellyfish