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: soil is formed by weathering. 
Sentence2: Something described as loamy is formed by weathering.

Output: formed


Input: Consider Input: Sentence1: Minerals are chemical elements that are essential for body processes. 
Sentence2: minerals are needed by body processes.

Output: processes


Input: Consider Input: Sentence1: a flashlight converts chemical energy into light energy. 
Sentence2: A joule is roughly the energy used by a flashlight turned on for one second.


Output: energy