I am totally new to electronics so I would like to have your help.
The project I would like to build is very simple but yet I don't know the name of the parts that I have to use.
So, I would like to have a relay that will activate a buzzer powered from a 3,6 lithium battery only when the 220 volt of the wall outlet goes off.A reset button would be perfect but not so necessary. 
Please help me with the circuit and the part names. 
Thank you.