With no explanation, label each line with "O", "building-hospital", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hotel" preceded by ":".
He
spent
another
year
at
the
New
York
Orthopedic
Hospital
before
being
appointed
surgeon
at
the
Hospital
for
Sick
Children
in
1947
.
He:O
spent:O
another:O
year:O
at:O
the:O
New:building-hospital
York:building-hospital
Orthopedic:building-hospital
Hospital:building-hospital
before:O
being:O
appointed:O
surgeon:O
at:O
the:O
Hospital:building-hospital
for:building-hospital
Sick:building-hospital
Children:building-hospital
in:O
1947:O
.:O