With no explanation, label each line with "O", "other-award", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Later
some
plantations
became
museums
,
often
on
the
National
Register
of
Historic
Places
.
Later:O
some:O
plantations:O
became:O
museums:O
,:O
often:O
on:O
the:O
National:other-award
Register:other-award
of:other-award
Historic:other-award
Places:other-award
.:O