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: Flowers produce seeds for reproduction. 
Sentence2: flowers require dispersal for reproduction.
answer:
Flowers


question:
Sentence1: Apollo 13 spacecraft is launched. 
Sentence2: Propulsion was used for flying Apollo 13.
answer:
13


question:
Sentence1: dehydrating food is used for preserving food. 
Sentence2: Salting food preserves it.
answer:

preserving