11871
Through two novel mechanisms , Arf inhibits the oncoprotein Hdm2 , a negative regulator of p53 .
 GENE: Arf; GENE: oncoprotein Hdm2; GENE: p53
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: Arf, oncoprotein Hdm2, p53 
Answer:
 GENE: Arf; GENE: oncoprotein Hdm2; GENE: p53