Definition: 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.
Input: Sentence1: Running water is better able to dissolve oxygen and nutrients than standing water. 
Sentence2: Large, warm rivers hold populations but few occur in cold running water.

water