
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
Three terrorist groups, \\(A\\), \\(B\\), and \\(C\\), each planned a murder. The police obtained the following intelligence:
\\(①\\) The second murder was committed by group \\(A\\).
\\(②\\) The second murder was not committed by group \\(A\\).
\\(③\\) The third murder was not committed by group \\(C\\).
After investigation, only one of the above pieces of intelligence is true, and the other two are false. The sequence number of the true intelligence is \_\_\_\_\_\_.

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