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: Lions live in social groups called prides. 
Sentence2: Chimpanzees live in social groups called communities.
answer:
groups


question:
Sentence1: Methane gas is a produced by rotting compost, trash, and human waste. 
Sentence2: Methane gas can be produced by Slime molds.
answer:
Methane


question:
Sentence1: Energy is passed up a food chain or web from lower to higher trophic levels. 
Sentence2: resources from food are passed up a chain or web from lower to higher trophic levels.
answer:

chain