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: Consider Input: Sentence1: Ribosomes are structures in the cytoplasm where proteins are made. 
Sentence2: prokaryotes can make proteins.

Output: made


Input: Consider Input: Sentence1: if an object is black then that object absorbs all visible light. 
Sentence2: Something is black if it absorbs visible light and doesn't reflect.

Output: light


Input: Consider Input: Sentence1: When algae dies, it uses oxygen to decompose. 
Sentence2: Oil comes from sediment mixing with dead, oxygenated algae.


Output: dies