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: Every photograph is produced by a camera.
Sentence2: Photographers record images.
answer:
photograph

question:
Sentence1: Basically, heat is energy.
Sentence2: Head hair is especially important in preventing energy loss from the body.
answer:
energy

question:
Sentence1: damming a river can cause a lake to form.
Sentence2: Other lakes formed throughout the region caused by stream blockages.
answer:
form