I am trying to execute below basic SOQL and i get error. 

SELECT Id,(SELECT Id FROM Events) FROM User


Error - 
SELECT Id,(SELECT Id FROM Events) FROM User
                          ^
ERROR at Row:1:Column:27
Didn't understand relationship 'Events' in FROM part of query call. If you are attempting to use a custom relationship, be sure to append the '__r' after the custom relationship name. Please reference your WSDL or the describe call for the appropriate names.