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: Dinosaur bones, like many other artifacts, are fossilized. 
Sentence2: radioactive dating is used to determine the age of dinosaur bones.

Answer: Dinosaur


Question: Sentence1: Petals attract pollinators to the flower. 
Sentence2: Something a daisy has attracts pollinators.

Answer: attract


Question: Sentence1: protein is used to repair cells by the human body. 
Sentence2: Protein can help repair lymphocytes.

Answer:
protein