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: a thermometer is used to measure temperature. 
Sentence2: a thermometer is used to measure heat.
answer:
a


question:
Sentence1: All monkeys are mammals. 
Sentence2: monkeys conserve body heat with their hair or fur.
answer:
monkeys


question:
Sentence1: Jaws make cartilaginous fish excellent predators. 
Sentence2: jaws make sharks excellent predators.
answer:

Jaws