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: Then dawn breaks and with it comes daylight, illumined by the sun. 
Sentence2: when the seasons change from summer to fall, the amount illumined by the sun will decrease.

illumined