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.

Ex Input:
Sentence1: if an animal sweats then that animal 's bodily water decreases. 
Sentence2: When an animal regulates their body temperature by releasing water, their bodily water decreases.

Ex Output:
bodily


Ex Input:
Sentence1: Plants live just about everywhere on Earth. 
Sentence2: epiphytes live everywhere on earth.

Ex Output:
everywhere


Ex Input:
Sentence1: Eagles are a big bird. 
Sentence2: feathers help eagles fly.

Ex Output:

Eagles