[질문] known by known for known to 각각의뜻이뭔가요

known by:~로알수있다(알려져있는데그판단기준이~에있다)::'판단기준' known for:~로(~때문에)알려지다(이유등을나타냄) known to:~에게알려지다(행위의대상)