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: if an object is made of a material then that object has the properties of that material. 
Sentence2: An object is an item in the real world.
answer:
object


question:
Sentence1: the digestive system breaks food into nutrients for the body. 
Sentence2: Meat is a nutrient-dense food.
answer:
food


question:
Sentence1: For a scientist, water is H2O whether from the Ganga or a tap. 
Sentence2: treating H2O is used to remove harmful substances before drinking.
answer:

H2O