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: ultraviolet light causes sunburn. 
Sentence2: Sunburn risk is higher at elevation.
answer:
sunburn


question:
Sentence1: decomposition increases the amount of nutrients in the soil. 
Sentence2: decomposition increases the amount of cations.
answer:
amount


question:
Sentence1: All animals are heterotrophs. 
Sentence2: All consumers are also called Heterotrophs.
answer:

heterotrophs