847
This rationale is written into dialogue by the Master in " Utopia " , in which he explicitly states , as he is regenerating , that if the Doctor can be young and strong , then so can he .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None