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: Sweat glands produce more sweat. 
Sentence2: When the body is hot, something coming from a gland is produced to cool the body.
Example Output: glands

Example Input: Sentence1: Climate Forests stabilize climate. 
Sentence2: forests stabilize what is generally described in terms of temperature and moisture.
Example Output: Forests

Example Input: Sentence1: when a gas in an open container evaporates , that gas spreads out into the air. 
Sentence2: When a gas in an open container spreads out, fumes present a danger.
Example Output:
container