Here's a short story:

Kathmandu, Nepal (CNN) -- An 80-year-old Japanese man on Thursday became the oldest person to reach the top of Mt. Everest, officials said. 

Yuichiro Miura reached the top of Everest Thursday morning with his physician son Gota, mountaineering official Gyanendra Shrestha said from the base of Everest. 

Miura's achievement eclipses that of a Nepali man who climbed Everest at age 76 in 2008. 

The oldest woman to climb Everest is also a Japanese. She was 73 when she reached the top last year. 

Miura broke his hip in an accident two years ago, and he underwent heart surgery in January. 

"I am still healthy and strong. I think I have a good chance to reach the summit of Everest," he said via phone earlier this month. 

To prepare, Miura walked three times a week with loads of 25 to 30 kilograms (55 to 66 lbs) on his back. 

He reached the top of the 8,848-meter (29,035-foot) peak twice before: in 2003 at age 70, and in 2008 at age 75. 

"I have a dream to climb Everest at this age," he said. "If you have a dream, never give up. Dreams come true." 

This year marks the 60th anniversary of the first expedition to reach the summit of Everest: Sir Edmund Hilary and Tenzing Norgay made it to the top of the mountain on May 29, 1953. 

Earlier this month, a 27-year-old graphic designer has made history by becoming the first Saudi woman to conquer the mount. 

 (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: How many times did Yuichiro Miura get to the top of Everest?
Guess: two
Confidence: <appropriate level of confidence in this guess>

Question: When was the first time?
Guess: in 2003
Confidence: <appropriate level of confidence in this guess>

Question: How old was he?
Guess: 70
Confidence: <appropriate level of confidence in this guess>

Question: When was the second time?
Guess: 2008
Confidence: <appropriate level of confidence in this guess>

Question: How old was he then>
Guess: 75
Confidence: <appropriate level of confidence in this guess>

Question: How old was he when he set the record for being the oldest to make it to the top?
Guess: 80
Confidence: <appropriate level of confidence in this guess>

Question: When did he do this?
Guess: Thursday
Confidence: <appropriate level of confidence in this guess>

Question: Where is he from?
Guess: Japan
Confidence: <appropriate level of confidence in this guess>

Question: What was the age of the previous record holder?
Guess: 76
Confidence: <appropriate level of confidence in this guess>

Question: What was the age of the oldest woman?
Guess: 73
Confidence: <appropriate level of confidence in this guess>

Question: Who accompanied Miura?
Guess: his physician son
Confidence: <appropriate level of confidence in this guess>

Question: What did he have surgery on?
Guess: his heart
Confidence: <appropriate level of confidence in this guess>

Question: Why was he trekking around with weight on his back?
Guess: to prepare
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: How many times a week did he do this?

three