android - What does it mean "the content provider can be instantiated by the system"? -

a few times in android's components i've encountered sentence

... can instantiated system

in particular here

whether or not content provider can instantiated system — "true" if can be, , "false" if not

so mean regard content provider? (btw content provider component new me - know other android components)

1. when can happen content provider instantiated system?
2. why can happen?
3. what benefit app gets by-system instantiation?

all android application components activity, service, contentprovider , broadcastreceiver(except dynamic) instantiated system when ever request comes.

ex:

activity instantiated system when ever calls startactivity() intent

similarly, contentprovider instantiated system when request access data provided contentprovider using contentresolver.query or contentresolver.insert passing respective uri.