Based on the following UML diagram for Facebook can you draw Use Case diagram for it? Also, can you explain use case diagram based on the diagram you draw.

Use Case diagram and explanation of that use case for that diagram on Facebook?

UML sequence diagram: Facebook user authentication Facebook Facebook Authorization Server WebBrowser "Application Content Server get FB resource request FB access shttp redirectw authorize permission form pemission form user permission process pemission ehttp redirect Ipermission granted) alt FB authorization code FB authorization code access token UML activity diagram : Enler Ln Deata Noficaiona Propare Wa User Preferonce es Online or Hidden? -[Yeel- -jUnine IHaen Retrieve Recuets Ird Irrald Login? Sct Status as Sot Statua as Ofine Online Lock Account Increment Invald Login Chnt -INO Send Waming Emall to Usor Diplay Anune Locke Screen Doplay Uaaa Wal UML sequence diagram: Facebook user authentication Facebook Facebook Authorization Server WebBrowser "Application Content Server get FB resource request FB access shttp redirectw authorize permission form pemission form user permission process pemission ehttp redirect Ipermission granted) alt FB authorization code FB authorization code access token UML activity diagram : Enler Ln Deata Noficaiona Propare Wa User Preferonce es Online or Hidden? -[Yeel- -jUnine IHaen Retrieve Recuets Ird Irrald Login? Sct Status as Sot Statua as Ofine Online Lock Account Increment Invald Login Chnt -INO Send Waming Emall to Usor Diplay Anune Locke Screen Doplay Uaaa Wal