5131
The RB1 gene from 12 human retinoblastoma tumors has been analyzed exon - by - exon with the single - strand conformation polymorphism technique .
 Disease: retinoblastoma tumors
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
 Entities: retinoblastoma tumors 
Answer:
 Disease: retinoblastoma tumors