With no explanation, label each line with "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
After
TUI
UK
merged
with
First
Choice
Holidays
in
September
2007
,
it
became
part
of
TUI
Travel
PLC
.
After:O
TUI:organization-company
UK:organization-company
merged:O
with:O
First:organization-company
Choice:organization-company
Holidays:organization-company
in:O
September:O
2007:O
,:O
it:O
became:O
part:O
of:O
TUI:organization-company
Travel:organization-company
PLC:organization-company
.:O