2308
These operons encode subunits of photosystems I ( psa ) and II ( psb ) , the cytochrome bGf complex ( pet ) , the plastid NAD ( P ) H dehydrogenase ( ndh ) , and the unidentified open reading frame ycf9 .
 GENE: photosystems I; GENE: psa; GENE: psb; GENE: cytochrome bGf complex; GENE: pet; GENE: NAD ( P ) H dehydrogenase; GENE: ndh; GENE: ycf9
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: photosystems I; GENE: psa; GENE: psb; GENE: cytochrome bGf complex; GENE: pet; GENE: NAD ( P ) H dehydrogenase; GENE: ndh; GENE: ycf9