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 Q]: Sentence1: Petals attract pollinators to the flower. 
Sentence2: Something a daisy has attracts pollinators.
[EX A]: attract

[EX Q]: Sentence1: an animal requires air for survival. 
Sentence2: The Moon has no atmosphere and no air.
[EX A]: air

[EX Q]: Sentence1: a refrigerator is used for keeping food fresh for a long period of time. 
Sentence2: cold is used for keeping food fresh for a long period of time.
[EX A]:
food