Here's a short story:

Fat and shy, Ben Saunders was the last kid in his class picked for any sports team. "Football, tennis, cricket -- anything with a round ball, I was useless," he says now with a laugh. But back then he was the one always made fun of in school gym classes in Devonshire, England. It was a mountain bike he received for his 15thbirthday that changed him. At first he went biking alone in a nearby forest. Then he began to ride the bike along with a runner friend. Gradually, Saunders set up his mind on building up his body, increasing his speed and strength. At the age of 18, he ran his first marathon. The following year he met John Ridgway and started to work as a teacher at Ridgway's school of adventure in Scotland, where he learnt about Ridgway's cold--waterexploits. Greatly interested, Saunders read all he could about North Pole explorers and adventures; he decided that this would be his future. In 2001, after becoming a skillful skier, Saunders started his first long--distance expedition towards the North Pole. It took unbelievable energy. He suffered frostbite, ran into a polar bear and pushed his body to the limit, pulling his sled up and over the rocky mountains. Saunders has become the youngest person to ski alone to the North Pole, and he's skied more of the North Pole by himself than any other British man. His old playmates would not believe the change. (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: Was Bill always good at sports?
Guess: no

Question: Was he usually picked last for teams?
Guess: yes

Question: What changed him?
Guess: a mountain bike

Question: how old was he?
Guess: 15

Question: where did he start cycling?
Guess: in a nearby fores

Question: with friends?
Guess: no

Question: Did he start exercising with a friend?
Guess: yes

Question: when did he run a marathon?
Guess: At the age of 18

Question: where did he start teaching?
Guess: in Scotland

Question: at what kind of school?
Guess: adventure

Question: what did he become most interested in there?
Guess: North Pole explorers and adventures

Now answer the following question in the same format.

Question: when did he first go on a North POle trip?

In 2001