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: Vesicle transport requires energy, so it is also a form of active transport. 
Sentence2: Then the membranes of the vesicle and the cell fuse and the contents of the vesicle are released.

Vesicle