In "A Fistful of Energon", Prowl removes a metal spike from Grimlock's foot.

Entity and relation annotations:
id: 0
type: entity
value: text: "A Fistful of Energon"
labels: <Work_of_art>
id: 1
type: entity
value: text: Grimlock
labels: <Person>
id: 2
type: entity
value: text: Prowl
labels: <Person>
type: relation
to_id: 0
labels: Person:is_character_in:Work_of_art
from_id: 1
type: relation
to_id: 0
labels: Person:is_character_in:Work_of_art
from_id: 2