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 ":".
The
gendarmes
demanded
that
the
two
men
surrender
.
The:O
gendarmes:O
demanded:O
that:O
the:O
two:O
men:O
surrender:O
.:O