To promote "Subhuman Race", Skid Row supported Van Halen on the North American tour.

Entity and relation annotations:
id: 0
type: entity
value: text: "Subhuman Race"
labels: <Work_of_art>
id: 1
type: entity
value: text: Skid Row
labels: <Person>
id: 2
type: entity
value: text: Van Halen
labels: <Person>
id: 3
type: entity
value: text: the North American tour
labels: <Event>
type: relation
to_id: 3
labels: Person:participates_in:Event
from_id: 2