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: Some mollusks are nearly microscopic. 
Sentence2: Some squids are nearly microscopic.
[EX A]: Some

[EX Q]: Sentence1: Weather Clear weather usually means good visibility. 
Sentence2: High pressure systems can cause good visibility.
[EX A]: good

[EX Q]: Sentence1: Hormones are chemical messengers that control many body functions. 
Sentence2: Neurotransmitters are chemical messengers in the brain.
[EX A]:
chemical