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 kicked then force is exerted on that object. 
Sentence2: if an object is kicked then a measurement of newtons is exerted on that object.
answer:
exerted


question:
Sentence1: Leeches are external parasites. 
Sentence2: Leeches live on the surface of their hosts.
answer:
Leeches


question:
Sentence1: hunting requires seeing prey. 
Sentence2: predators require being able to see their prey.
answer:

prey