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.

[EX Q]: Sentence1: Boiling water can cause burns. 
Sentence2: heating water can cause burns.
[EX A]: water

[EX Q]: Sentence1: Macroevolution is more than repeated rounds of microevolution. 
Sentence2: evolution over geologic time above the level of the species is more than repeated rounds of microevolution.
[EX A]: microevolution

[EX Q]: Sentence1: Platypus females lay their eggs in a burrow. 
Sentence2: Monotremes lay eggs.
[EX A]:
eggs