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 ":".
A
shooting
resulted
in
a
death
outside
the
hotel
lobby
in
2015
.
A:O
shooting:O
resulted:O
in:O
a:O
death:O
outside:O
the:O
hotel:O
lobby:O
in:O
2015:O
.:O