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.

Q: Sentence1: Evaporation of sweat uses energy, and the energy comes from body heat. 
Sentence2: Evaporation of sweat uses energy, and the energy comes from exercise.

A: Evaporation
****
Q: Sentence1: Minerals are chemical elements that are essential for body processes. 
Sentence2: minerals are needed by body processes.

A: processes
****
Q: Sentence1: uneven heating of the Earth 's surface cause wind. 
Sentence2: Uneven heating of the Earth's surface causes destruction to homes and businesses.

A:
Earth
****