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: Producers make food from inorganic molecules. 
Sentence2: Decomposition is the breakdown of organic molecules into inorganic molecules.

Output: inorganic


Input: Consider Input: Sentence1: melting is when solids are heated above their melting point. 
Sentence2: Ice is a solid, it's cold and it's hard.

Output: solids


Input: Consider Input: Sentence1: Ants communicate with the colony in the form of what is called pheremon trails. 
Sentence2: Ants communicate with the colony using pheremon traits.


Output: colony