While in Niton, Marconi stayed at the Royal Sandrock Hotel, which no longer exists.

Entity and relation annotations:
id: 0
type: entity
value: text: Niton
labels: <Location>
id: 1
type: entity
value: text: Marconi
labels: <Person>
id: 2
type: entity
value: text: the Royal Sandrock Hotel
labels: <Organization>
type: relation
to_id: 0
labels: Person:visits:Location
from_id: 1