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 ":".
By
1986
the
largest
,
2-liter
engine
represented
the
biggest
portion
of
production
.
By:O
1986:O
the:O
largest:O
,:O
2-liter:O
engine:O
represented:O
the:O
biggest:O
portion:O
of:O
production:O
.:O