
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
A rower, passing under a bridge, lost his hat. 15 minutes later he noticed the loss and caught the hat one kilometer from the bridge. What is the speed of the river current?

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