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: poisonous darts are used for defense by sea anemones. 
Sentence2: poisonous darts are used for protection by sea anemones.

Output: anemones


Input: Consider Input: Sentence1: Diet : Starch and sweet foods high in carbohydrates can cause sleepiness. 
Sentence2: sugar can cause sleepiness.


Output: sleepiness