Tolson is buried in the Congressional Cemetery, near Hoover's grave.

Entity and relation annotations:
id: 0
type: entity
value: text: Tolson
labels: <Person>
id: 1
type: entity
value: text: the Congressional Cemetery
labels: <Location>
id: 2
type: entity
value: text: Hoover's grave
labels: <Location>
id: 3
type: entity
value: text: Hoover
labels: <Person>
type: relation
to_id: 2
labels: Person:died_at:Location
from_id: 3
type: relation
to_id: 1
labels: Person:died_at:Location
from_id: 0