instruction:
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.
question:
Sentence1: a sifter is used for separating mixtures. 
Sentence2: a sifter is used for some recipes.
answer:
sifter


question:
Sentence1: Information on DNA is organized into genes. 
Sentence2: DNA codes for proteins.
answer:
DNA


question:
Sentence1: Osteoporosis is a disease of the bones. 
Sentence2: a disease in which osteoclasts are more active than osteoblasts is bone disease.
answer:

bones