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: Asses are great runners and there is no match in speed and stamina in the entire animal kingdom. 
Sentence2: asses require stamina to succeed at running.

runners