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: Hurricanes have wind speeds of at least 74 mph. 
Sentence2: anemometers can measure hurricanes.

Output: Hurricanes


Input: Consider Input: Sentence1: Cells are the microscopic building blocks of organisms. 
Sentence2: proteins are the building blocks of organisms.

Output: organisms


Input: Consider Input: Sentence1: preventing the transfer of heat from an organims 's body causes that organism to keep warm. 
Sentence2: Preventing the transfer of energy from an organism's body keeps it warm.


Output: 's