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: high pressure systems cause clear weather. 
Sentence2: Weather Clear weather usually means good visibility.
[EX A]: clear

[EX Q]: Sentence1: Cnidarians are invertebrates such as jellyfish and corals. 
Sentence2: Jellyfish and corals are radial, tentacled animals that live mostly in the seas.
[EX A]: corals

[EX Q]: Sentence1: If an animal become extinct, it's gone forever. 
Sentence2: if all members of a species cannot produce offspring then that species will likely be gone forever.
[EX A]:
forever