Possible Clues:

• Nairobi natives
• East Africans such as Eliud Kipchoge and Wangari Maathai
• Eg, natives of Nairobi
• Many elite marathoners
• Mombasa residents
• Mombasa masses
• Obama's paternal ancestors
• Many successful marathoners
• Knows about negative answer that's upset Africans
• Shifta War combatants