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: Intermediate length rays are visible as light. 
Sentence2: when intermediate length rays enter the eye through the pupil it falls on the retina.

Intermediate