He was second billed at the Earls Court Music festival with Jay-Z.

Entity and relation annotations:
id: 0
type: entity
value: text: the Earls Court Music festival
labels: <Event>
id: 1
type: entity
value: text: Jay-Z
labels: <Person>
type: relation
to_id: 0
labels: Person:participates_in:Event
from_id: 1