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: Information on DNA is organized into genes. 
Sentence2: DNA codes for proteins.
[A]: DNA


[Q]: Sentence1: Earth's Atmosphere Earth's atmosphere is the layer of gasses that surrounds the earth. 
Sentence2: weather refers to the conditions in the layer of gasses that surrounds the earth.
[A]: earth


[Q]: Sentence1: Bone is less flexible than cartilage but stronger. 
Sentence2: Cartilage is more flexible and lighter in weight than bone.
[A]:
flexible