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: Here, the lungs supply the blood with oxygen. 
Sentence2: Brain cells die quickly if their blood supply is cut off.
[EX A]: blood

[EX Q]: Sentence1: Hurricanes have wind speeds of at least 74 mph. 
Sentence2: anemometers can measure hurricanes.
[EX A]: Hurricanes

[EX Q]: Sentence1: a flower 's purpose is to produce seeds. 
Sentence2: A flower's purpose is to make new plants.
[EX A]:
's