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.
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Question: Sentence1: Organisms that live in marine biomes must be adapted to the salt in the water. 
Sentence2: Most of the water on the planet is salt water in the oceans.

Answer: salt


Question: Sentence1: Echinoderms use pheromones to communicate with each other. 
Sentence2: Echinoderms are known for their round symmetry.

Answer: Echinoderms


Question: Sentence1: an incandescent light bulb converts electricity into light by sending electricity through a filament. 
Sentence2: a light bulb converts energy into light by sending energy through a filament.

Answer:
bulb