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 ":".
Its
name
refers
to
the
unique
illumination
provided
by
a
large
skylight
cut
very
high
up
into
the
thick
wall
across
the
ambulatory
,
and
another
hole
cut
into
the
back
of
the
altarpiece
itself
to
allow
shafts
of
sunlight
to
strike
the
tabernacle
.
Its:O
name:O
refers:O
to:O
the:O
unique:O
illumination:O
provided:O
by:O
a:O
large:O
skylight:O
cut:O
very:O
high:O
up:O
into:O
the:O
thick:O
wall:O
across:O
the:O
ambulatory:O
,:O
and:O
another:O
hole:O
cut:O
into:O
the:O
back:O
of:O
the:O
altarpiece:O
itself:O
to:O
allow:O
shafts:O
of:O
sunlight:O
to:O
strike:O
the:O
tabernacle:O
.:O