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
property
serves
as
an
open-air
classroom
for
the
system
's
member
institutions
and
a
laboratory
for
their
research
efforts
.
The:O
property:O
serves:O
as:O
an:O
open-air:O
classroom:O
for:O
the:O
system:O
's:O
member:O
institutions:O
and:O
a:O
laboratory:O
for:O
their:O
research:O
efforts:O
.:O