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
length
of
the
cannon
was
18
calibers
,
that
is
,
18
times
the
diameter
of
the
bore
.
The:O
length:O
of:O
the:O
cannon:O
was:O
18:O
calibers:O
,:O
that:O
is:O
,:O
18:O
times:O
the:O
diameter:O
of:O
the:O
bore:O
.:O