LIVERPOOL, England, April 14 : Paris St Germain showed why they are the reigning champions of Europe, coach Luis Enrique said, after his side completed a commanding 4-0 aggregate victory over Liverpool on Tuesday to reach the Champions League semi-finals. PSG were pushed for spells at Anfield, particularly in the second half, but Ousmane Dembele struck twice after the break as Luis Enrique's men won 2-0 to again demonstrate the belief and resilience that are hallmarks of their European campaign.