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 ":".
In
1996
,
two
men
shot
at
security
guards
in
the
casino
parking
lot
;
there
were
no
injuries
.
In:O
1996:O
,:O
two:O
men:O
shot:O
at:O
security:O
guards:O
in:O
the:O
casino:O
parking:O
lot:O
;:O
there:O
were:O
no:O
injuries:O
.:O