With no explanation, label each line with "O", "location-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Under
him
,
Snowbird
's
ski
school
became
ranked
as
one
of
the
top
in
the
nation
,
a
position
it
still
holds
to
this
today
.
Under:O
him:O
,:O
Snowbird:location-other
's:O
ski:O
school:O
became:O
ranked:O
as:O
one:O
of:O
the:O
top:O
in:O
the:O
nation:O
,:O
a:O
position:O
it:O
still:O
holds:O
to:O
this:O
today:O
.:O