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.

Example input: Sentence1: pesticides cause pollution. 
Sentence2: pollution can harm animals.
Example output: pollution.
Example explanation: The word "pollution" is common to Sentence1 and Sentence2. So, it's a good answer.
Q: Sentence1: if an organism becomes too hot then that organism may die. 
Sentence2: direct sunlight may cause death.
A:
die