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: drought is when amount of precipitation decreases. 
Sentence2: Drought decreases the availability and abundance of the natural food supply.
[EX A]: drought

[EX Q]: Sentence1: An accounting period is simply a period of time. 
Sentence2: seconds are used to measure a period.
[EX A]: period

[EX Q]: Sentence1: if an object is in the sunlight then that object will absorb solar energy. 
Sentence2: Plants absorb sunlight to make sugar.
[EX A]:
absorb