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 ":".
In
1998
,
Grupo
TACA
acquired
a
20
percent
stake
in
the
company
.
In:O
1998:O
,:O
Grupo:organization-company
TACA:organization-company
acquired:O
a:O
20:O
percent:O
stake:O
in:O
the:O
company:O
.:O