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: Bioterrorism is the intentional release or spread of agents of disease. 
Sentence2: Bioterrorism is the intentional release pathogens.

intentional