
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Four children were discussing the answer to a problem.

Kolia said: "The number is 9."

Roman said: "The number is a prime number."

Katya said: "The number is even."

Natasha said: "The number is divisible by 15."

One boy and one girl answered correctly, while the other two were wrong. What is the actual answer to the problem?

Present the answer in LaTex format: \boxed{Your answer}
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