3636
In patients that were free of recurrence during the first year , 80 % remained tumor - free during the 2 - to 3 - year follow - up period .
 Disease: tumor
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: tumor 
Answer:
 Disease: tumor