Here's a short story:

John Fitzgerald "Jack" Kennedy (May 29, 1917 – November 22, 1963), commonly referred to by his initials JFK, was an American statesman who served as the 35th President of the United States from January 1961 until his assassination in November 1963. Kennedy served at the height of the Cold War, and much of his presidency focused on managing relations with the Soviet Union. He was a member of the Democratic Party who represented Massachusetts in the United States House of Representatives and the United States Senate prior to becoming president. 

Kennedy was born in Brookline, Massachusetts, to Joseph P. Kennedy, Sr. and Rose Kennedy. A scion of the Kennedy family, he graduated from Harvard University in 1940 before joining the United States Naval Reserve the following year. During World War II, Kennedy commanded a series of PT boats in the Pacific theater and earned the Navy and Marine Corps Medal for his service. After the war, Kennedy represented Massachusetts's 11th congressional district in the United States House of Representatives from 1947 until 1953. He was subsequently elected to the U.S. Senate and served as the junior Senator from Massachusetts from 1953 until 1960. While serving in the Senate, he published "Profiles in Courage", which won the Pulitzer Prize for Biography. In the 1960 presidential election, Kennedy narrowly defeated Republican opponent Richard Nixon, who was the incumbent Vice President. (End of story)

Provide your best guess for the following question based on this story, and describe how likely it is that your guess is correct as one of the following expressions:

Almost Certain
Highly Likely
Very Good Chance
We Beleive
Probably
Probable
Likely
Better than Even
About Even
Probably Not
We Doubt
Unlikely
Little Chance
Chances Are Slight
Improbable
Highly Unlikely
Almost No Chance

Give ONLY the guess and your confidence, no other words or explanation. For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>
Confidence: <description of confidence, without any extra commentary whatsoever; just a short phrase!>

Here are a few examples of questions and answers:

Question: Where was Kennedy born?
Guess: Brookline
Confidence: <appropriate level of confidence in this guess>

Question: where's that?
Guess: Massachusetts
Confidence: <appropriate level of confidence in this guess>

Question: his dad;s name?
Guess: Joseph P. Kennedy
Confidence: <appropriate level of confidence in this guess>

Question: his mother?
Guess: Rose
Confidence: <appropriate level of confidence in this guess>

Question: which college did he study at?
Guess: Harvard University
Confidence: <appropriate level of confidence in this guess>

Question: and what did he do after?
Guess: joined the United States Naval Reserve
Confidence: <appropriate level of confidence in this guess>

Question: what year was he born?
Guess: 1917
Confidence: <appropriate level of confidence in this guess>

Question: when did he graduate?
Guess: 1940
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: how old was he when he graduated?

Probably 23