Here's a short story:

At three a.m., Jack Mills was sitting at the controls of the mail train. The train was made up of 13 cars. At the end of the train, 71 mailmen sat sorting the mails. Inside the second car, there were only five mailmen and 128 bags full of five-pound notes. This train had run more than 100 years without being robbed. At three minutes past three, Mills and his helper, David Whitby, saw a yellow warning light. They slowed the train, and then stopped. Whitby went to the telephone beside the track. It was out of order. Then he saw a man moving between the second and the third cars. Before Whitby could give a warning, he was knocked down by two men. Mills' cars with all the mailmen had been disconnected by the robbers. At the bridge, the bags of money were unloaded from the train and thrown into waiting trucks. One of the robbers who obviously knew the schedules of all the trains kept looking at his watch. At 3:45 he said, "That will have to be enough." The robbers drove away with more than 2,500,000 pounds. (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 time does the tale commence?
Guess: 3:00 AM
Confidence: <appropriate level of confidence in this guess>

Question: Who's driving the train?
Guess: Jack Mills
Confidence: <appropriate level of confidence in this guess>

Question: At what time does his helper see the yellow light?
Guess: 3:03 AM
Confidence: <appropriate level of confidence in this guess>

Question: What did they do next?
Guess: slowed down
Confidence: <appropriate level of confidence in this guess>

Question: At what time does his helper see the yellow light?
Guess: 3:03 AM
Confidence: <appropriate level of confidence in this guess>

Question: Did they train stop after slowing down?
Guess: Yes
Confidence: <appropriate level of confidence in this guess>

Question: Who saw the yellow light?
Guess: Mills and Whitby
Confidence: <appropriate level of confidence in this guess>

Question: What happened at the bridge?
Guess: bags of money were unloaded
Confidence: <appropriate level of confidence in this guess>

Question: How much did the robbers get away with?
Guess: more than 2,500,000 pounds
Confidence: <appropriate level of confidence in this guess>

Question: At what time did they stop before making their getaway?
Guess: 3:45
Confidence: <appropriate level of confidence in this guess>

Question: How many mailmen were in the second car?
Guess: five
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: What were the bags full of?

five-pound notes