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: Herbs are medicines and aids. 
Sentence2: herbs are used for curing people when they are sick.

Output: Herbs


Input: Consider Input: Sentence1: healing requires rest. 
Sentence2: Healing requires a sound sleep.


Output: healing