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: Moisture is required for the microorganisms to grow. 
Sentence2: Moisture can cause infections to grow.
answer:
Moisture


question:
Sentence1: Acids dissolve in base and turn blue litmus red. 
Sentence2: acid changes color.
answer:
Acids


question:
Sentence1: a greenhouse is used to protect plants by keeping them warm. 
Sentence2: a greenhouse is used to protect plants by keeping their temperature.
answer:

greenhouse