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: Average vehicle speed rises by only 0.3 miles per hour. 
Sentence2: a speedometer measures miles per hour.
[EX A]: hour

[EX Q]: Sentence1: Without light there is no sense of vision. 
Sentence2: Glass causes a sense of vision.
[EX A]: sense

[EX Q]: Sentence1: Lipids may consist of fatty acids alone, or they may contain other molecules as well. 
Sentence2: Lipids Lipids are also composed of carbon, oxygen and hydrogen.
[EX A]:
Lipids