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The gap protein knirps mediates both quenching and direct repression in the Drosophila embryo .
 GENE: gap; GENE: knirps
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: gap; GENE: knirps