
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
Given the function relationship $L=101g(\frac{I}{{10}^{-12}})$, the sound intensity level $L$ in terms of sound intensity $I$ is represented, where $L$ is in units of $dB$ and $I$ is in units of $W/m^{2}$. If the sound intensity level of the train before the speed increase is $100 dB$ and the sound intensity level of the train after the speed increase is $50 dB$, determine the sound intensity of the ordinary train.

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