
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 high school with 2000 students held a "May Fourth" running and mountain climbing competition in response to the call for "Sunshine Sports". Each student participated in only one of the competitions. The number of students from the first, second, and third grades participating in the running competition were \(a\), \(b\), and \(c\) respectively, with \(a:b:c=2:3:5\). The number of students participating in mountain climbing accounted for \(\frac{2}{5}\) of the total number of students. To understand the students' satisfaction with this event, a sample of 200 students was surveyed. The number of second-grade students participating in the running competition that should be sampled is \_\_\_\_\_.

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