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 ":".
Modern
computers
can
be
used
to
solve
Enigma
,
using
a
variety
of
techniques
.
Modern:O
computers:O
can:O
be:O
used:O
to:O
solve:O
Enigma:O
,:O
using:O
a:O
variety:O
of:O
techniques:O
.:O