With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
3717
``
City
of
Truro
''
,
GWR
4575
Class
2-6-2T
No
.
3717:O
``:O
City:O
of:O
Truro:O
'':O
,:O
GWR:O
4575:O
Class:O
2-6-2T:O
No:O
.:O