12475
dallek says kennedy ' s brushes with death , combined with his t deaths of his sister and brother , fueled the ambition to led him to become the youngest person elected president in american history .
 american, dallek, kennedy, his, his, his sister and brother, him, the youngest person elected president in american history, president
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 american, dallek, kennedy, his, his, his sister and brother, him, the youngest person elected president in american history, president