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: Most major Atlantic hurricanes start as small disturbances moving westward off Africa. 
Sentence2: When something that starts as a small disturbance moving westward off Africa then moves over land, it will decrease in strength.

Output: Africa


Input: Consider Input: Sentence1: Angiosperm sporophyte is dominant. 
Sentence2: Flowers form on angiosperms.

Output: Angiosperm


Input: Consider Input: Sentence1: Climate is generally described in terms of temperature and moisture. 
Sentence2: Clouds are made of moisture and the moisture is from the water evaporating.


Output: moisture