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: dehydrating food is used for preserving food. 
Sentence2: Our Nesco Food Dehydrators require no tray rotation due to a patented air flow system.

dehydrating