With no explanation, label each line with "building-other", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
When
the
Poughkeepsie
Bridge
opened
in
1889
,
it
became
the
longest
single-span
bridge
in
the
world
.
When:O
the:O
Poughkeepsie:building-other
Bridge:building-other
opened:O
in:O
1889:O
,:O
it:O
became:O
the:O
longest:O
single-span:O
bridge:O
in:O
the:O
world:O
.:O