Here's a short story:

If you had billions of dollars,would you give away almost all of it to charity ?Well that's what Mark Zuckerberg,CEO and founder of Facebook,just said he would do.Zuckerberg and his wife Priscilla Chan promised to give 99 percent of their money to society.Right now that is about $45 billion(289 billion yuan),and they plan to give away the money to things like science and education. Many billionaires have done similar things,for example,Bill Gates.But giving back and helping others isn't just for big billionaires.People like Zuckerberg and Gates may have more to give,but people with less are doing it too.Especially around the holidays,people want to do their part and give back to people who are less lucky than them.Schools may have food collections where people bring some food and together they can give away some other things to places like homeless centers. People also host special events like concerts or runs to be creative while raising money.Common people give away whatever they can to US charities like the United Way and the American Red Cross. Then these charities are able to help the poor in different ways like education,health and improving their lives.These things come together to make a big difference. (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: What is a charity that helps people?
Guess: united way
Confidence: <appropriate level of confidence in this guess>

Question: Is there another talked about?
Guess: Red Cross
Confidence: <appropriate level of confidence in this guess>

Question: How do these aid?
Guess: different ways
Confidence: <appropriate level of confidence in this guess>

Question: What is one way?
Guess: education
Confidence: <appropriate level of confidence in this guess>

Question: What is a way schools help people give back?
Guess: food collections
Confidence: <appropriate level of confidence in this guess>

Question: Do mare people give during holidays?
Guess: yes
Confidence: <appropriate level of confidence in this guess>

Question: Is it only average income people that help?
Guess: no
Confidence: <appropriate level of confidence in this guess>

Question: Who is giving away most of their wealth?
Guess: mark Zuckerberg and Priscilla Chan
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: Who is he?

founder of facebook?