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: melting is when solids are heated above their melting point. 
Sentence2: Ice is a solid, it's cold and it's hard.
answer:
solids


question:
Sentence1: After a seed is planted it is watered. 
Sentence2: seeds need water.
answer:
seed


question:
Sentence1: Most aquatic organisms do not have to deal with extremes of temperature or moisture. 
Sentence2: Most fish do not have to deal with extreme temperature or moisture.
answer:

Most