Here's a short story:

The world's oldest person, Ms. Baines, died. She celebrated her 115th birthday with congratulations from Barack Obama, President of the United States. Over her life she lived through the terms of 21 US presidents. Gertrude Baines passed away peacefully in her sleep at the Western Convalescent Hospital in Los Angeles, where she had lived for her last ten years. Emma Camanag , the hospital's leader ,said she was a respectable lady. "It is really an honor for the hospital to take care of her over the last 10 years and we will greatly miss her. It is just like we have lost a relative ," said Emma. Ms. Baines, who was born in Shellman, Georgia, in 1894, had no living relatives. She grew up in the southern US during difficult times. During that time, African American people were required to use separate, often poor, public services. She married young and later divorced . Her only child, a daughter, was born in 1909 and died of a terrible disease at the age of 18. Ms. Baines worked as a maid in Ohio before moving to Los Angeles where she lived on her own until she was well over 100. She once told an interviewer , "As for the secrets of long life, I do not have any disappointments in my own life." She gained some fame when she voted for Mr. Obama in the US presidential election , saying she supported him "because he's for the colored people". It was only the second time in her life she had voted, the first time being for John F. Kennedy. Ms. Baines became the world's oldest person in January. Japanese woman, Kama Chien, 114, has now taken over the title. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: What was the age of the world's oldest person?
Guess: 115

Now answer the following question in the same format.

Question: Who celebrated with her?

Barack Obama