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: Cells are the microscopic building blocks of organisms. 
Sentence2: proteins are the building blocks of organisms.
answer:
organisms


question:
Sentence1: Producers use energy and inorganic molecules to make food. 
Sentence2: Green plants use energy and inorganic molecules to make food.
answer:
energy


question:
Sentence1: Photosynthetic plants convert solar energy to chemical bond energy in carbohydrates. 
Sentence2: Photosynthesis converts solar energy into chemical bond energy for themselves.
answer:

bond