
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
The tail of a 2-mile long train exits a tunnel exactly 4 minutes after the front of the train entered the tunnel. If the train is moving at 90 miles per hour, how many miles long is the tunnel?

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