9043
He is named after the British physicist Ernest Rutherford , who was a friend of Niels , and after Niels ' maternal grandfather .
 person: Ernest Rutherford; person: Niels; person: Niels
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:
 person: Ernest Rutherford; person: Niels; person: Niels