Requesting a particular JSON dictionary from a JSON stream
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This is kind of an abstract question, so forgive me if it doesn't fit here. I'm wondering if there's a standard way to query a JSON stream for a particular sub-dictionary, instead of having the stream return all of its contents at once. I'm hoping I could use parameters in the URL to do this, but I'm not sure if there's a standardized methodology for making such queries. 

Any advice would be awesome. Thanks!