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: Annelids have the amazing capacity to regrow segments that break off. 
Sentence2: Earthworms can regrow segments that break off.

Output: break


Input: Consider Input: Sentence1: Fractures heal when osteoclasts form new bone. 
Sentence2: Fractures A fracture is a broken or cracked bone.

Output: Fractures


Input: Consider Input: Sentence1: Some precipitation that falls on land may soak into the ground, becoming groundwater. 
Sentence2: Some snow that falls on land may soak into the ground becoming groundwater.


Output: Some