The bands which have performed at Ermal include Slipknot, Sepultura and Angra.

Entity and relation annotations:
id: 0
type: entity
value: text: Ermal
labels: <Location>
id: 1
type: entity
value: text: Slipknot
labels: <Organization>
id: 2
type: entity
value: text: Sepultura
labels: <Organization>
id: 3
type: entity
value: text: Angra
labels: <Organization>