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 ":".
Beyond
The
Stack
,
Interstate
10
proceeds
eastward
through
a
tunnel
underneath
Downtown
.
Beyond:O
The:O
Stack:O
,:O
Interstate:O
10:O
proceeds:O
eastward:O
through:O
a:O
tunnel:O
underneath:O
Downtown:O
.:O