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 ":".
During
the
First
Empire
the
ships
designed
for
both
sea
and
river
sailing
.
During:O
the:O
First:O
Empire:O
the:O
ships:O
designed:O
for:O
both:O
sea:O
and:O
river:O
sailing:O
.:O