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: Blood type is important for medical reasons. 
Sentence2: Type O is important for medical reasons.
[EX A]: important

[EX Q]: Sentence1: Minerals are chemical elements that are essential for body processes. 
Sentence2: minerals are needed by body processes.
[EX A]: processes

[EX Q]: Sentence1: sand dunes are formed by the wind transporting and depositing sand. 
Sentence2: Coarser sands are found on the dune tops.
[EX A]:
sand