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: Rabbits' brown summer fur is replaced with fur that is greyer. 
Sentence2: If seeds stick to a rabbit then that seed will be transported by the animal.

Rabbits'