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: hunting requires seeing prey. 
Sentence2: hunting requires seeing an animal.
answer:
hunting


question:
Sentence1: Without light there is no sense of vision. 
Sentence2: Glass causes a sense of vision.
answer:
sense


question:
Sentence1: Adolescence is the last stage of life before adulthood. 
Sentence2: Soon after puberty, the adult life stage begins.
answer:

adulthood