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# System prepended metadata

title: Comment April. 22nd

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# Comment April. 22nd

## P3. 
> <PM2.5>
 
Change to (PM 2.5) 
Use round bracket and space between PM and 2.5.

## P7.
> SQL machine learning 

Change to SQL Machine Learning

> Windows ML

Change to Azure ML. 
Azure ML is to provide service, while Windows ML is for general users.

