With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
His
forces
were
eventually
defeated
in
battle
and
he
himself
died
in
a
besieged
castle
at
Tykocin
.
His:O
forces:O
were:O
eventually:O
defeated:O
in:O
battle:O
and:O
he:O
himself:O
died:O
in:O
a:O
besieged:O
castle:O
at:O
Tykocin:location-GPE
.:O