7435
Isolation and genomic structure of a human homolog of the yeast periodic tryptophan protein 2 ( PWP2 ) gene mapping to 21q22 . 3 .
 GENE: yeast periodic tryptophan protein 2; GENE: PWP2
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: yeast periodic tryptophan protein 2, PWP2 
Answer:
 GENE: yeast periodic tryptophan protein 2; GENE: PWP2