
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 Ming bought a set of stamps themed "Twenty-four Solar Terms". He placed three stamps with the themes "Beginning of Spring", "Pure Brightness", and "Grain Buds" (the front side is different, but the back side is the same) facing down, shuffled them, and randomly picked one stamp. Determine the probability of picking the stamp with the theme "Grain Buds".

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