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
land
remained
undeveloped
until
the
city
and
civic
organizations
cooperated
to
beautify
the
park
in
1926
,
building
entrance
gates
,
restrooms
,
and
other
amenities
.
The:O
land:O
remained:O
undeveloped:O
until:O
the:O
city:O
and:O
civic:O
organizations:O
cooperated:O
to:O
beautify:O
the:O
park:O
in:O
1926:O
,:O
building:O
entrance:O
gates:O
,:O
restrooms:O
,:O
and:O
other:O
amenities:O
.:O