
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 folk song competition is held in a certain place, with one pair of singers from each of six provinces participating in the final. Calculate the probability that among the four winners selected, there are exactly two singers from the same province.

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