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: Dromaeosaurs are part of the theropod group of dinosaurs. 
Sentence2: Birds evolved from a group of bipedal dinosaurs that included Dromaeosaurs.

Answer: Dromaeosaurs


Question: Sentence1: wind is used for producing electricity. 
Sentence2: Winds are caused by pressure differences.

Answer: wind


Question: Sentence1: dehydrating food is used for preserving food. 
Sentence2: Some food is dehydrated, while others are dried much like beef jerky.

Answer:
dehydrating