Complex sentence: A gang headed by Leca (Claude Dauphin) that hangs out around the Paris quarter of Belleville goes with their girlfriends to a dance hall in Joinville along the banks of the Marne.
Split into simpler sentences: A gang headed by Leca (Claude Dauphin) hang out around the Paris quarter of Belleville. The gang members go with their girlfriends to a dance hall in Joinville along the banks of the Marne.