
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
The Fibonacci sequence is defined as
$$
a_0 = 0, \; a_1 = a_2 = 1, \; a_{n+1} = a_n + a_{n-1} \; (n \geq 1).
$$

Find the greatest common divisor of the 1960th term and the 1988th term.
(Note: This is from the 29th International Mathematical Olympiad, 1988)

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