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.
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Question: Sentence1: Interest in fossils is worldwide. 
Sentence2: paleontologists study something with worldwide interest.

Answer: Interest


Question: Sentence1: Ozone depletion results in higher levels of UV radiation reaching Earth. 
Sentence2: less ozone means more ultraviolet light.

Answer: Ozone


Question: Sentence1: Viruses contain DNA but not much else. 
Sentence2: DNA is encoded information.

Answer:
DNA