With no explanation, label each line with "organization-other", "O", "other-law", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
Maastricht
Treaty
was
ratified
in
1993
,
and
created
the
European
Union
.
The:O
Maastricht:other-law
Treaty:other-law
was:O
ratified:O
in:O
1993:O
,:O
and:O
created:O
the:O
European:organization-other
Union:organization-other
.:O