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: Meiosis is the type of cell division that produces gametes. 
Sentence2: Meiosis is the type of cell division that can produce sperm.

cell