Hiram Sibley of the Western Union Telegraph Company won the contract.

Entity and relation annotations:
id: 0
type: entity
value: text: Hiram Sibley
labels: <Person>
id: 1
type: entity
value: text: the Western Union Telegraph Company
labels: <Organization>
type: relation
to_id: 1
labels: Person:affiliated_with:Organization
from_id: 0