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: Sand and mud are examples of sediments. 
Sentence2: layers of sand over the remains of organisms over time can create fossils.
[A]: Sand


[Q]: Sentence1: For instance, glucose is a sugar. 
Sentence2: insulin helps cells take up sugar from the blood.
[A]: sugar


[Q]: Sentence1: an anemometer is used to measure wind speed. 
Sentence2: Forecast changes in wind speed and direction at 850 mb should be used in formulating forecasts of surface winds for the narrative fire weather forecast and the point forecast for Finney Creek.
[A]:
speed