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 flower 's purpose is to produce seeds. 
Sentence2: Every job has meaning and purpose.
answer:
purpose


question:
Sentence1: Stress is the applied force, strain is the change in shape. 
Sentence2: Paper is crumbled when stress and strain is applied in order to change the shape.
answer:
Stress


question:
Sentence1: Viruses often infect bacteria. 
Sentence2: Infected birds spread the bacteria in their droppings.
answer:

infect