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: Centrioles come in pairs. 
Sentence2: Something that comes in pairs are organelles involved in cell division.

Output: come


Input: Consider Input: Sentence1: Mangoes are propagated vegetatively and by seeds. 
Sentence2: animals propagate mangoes.

Output: Mangoes


Input: Consider Input: Sentence1: preventing the transfer of heat from an organims 's body causes that organism to keep warm. 
Sentence2: Sweating increases the amount of heat that is transferred from the body.


Output: heat