170795
His father , Hillard Boone Alexander , was born a slave in Mecklenburg , Virginia , and had migrated to Philadelphia with his brother , Samuel , in 1880 .
 person: Alexander
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Alexander 
Answer:
 person: Alexander