With no explanation, label each line with "O", "building-airport", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-hospital" or "building-hotel" preceded by ":".
These
platforms
were
closed
after
international
services
moved
to
St
Pancras
International
in
2007
.
These:O
platforms:O
were:O
closed:O
after:O
international:O
services:O
moved:O
to:O
St:building-airport
Pancras:building-airport
International:building-airport
in:O
2007:O
.:O