
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
Xiao Jun, Xiao Yan, and Xiao Ming are classmates. Assuming the possibilities of their arrival at school in the morning are the same, the probability of the event "Xiao Yan arrives at school earlier than Xiao Ming" is \_\_\_\_.

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