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: Polygenic inheritance Polygenic traits are controlled by an unknown number of genes. 
Sentence2: Skin color is inherited from a number of genes.
answer:
genes


question:
Sentence1: soil is formed by weathering. 
Sentence2: Something described as loamy is formed by weathering.
answer:
formed


question:
Sentence1: the sun causes water to evaporate more quickly by adding heat. 
Sentence2: In direct evaporative systems, the evaporation process humidifies the air.
answer:

evaporate