With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
chain
comprises
more
than
sixty
locations
in
twenty
states
throughout
the
U.S
.
The:O
chain:O
comprises:O
more:O
than:O
sixty:O
locations:O
in:O
twenty:O
states:O
throughout:O
the:O
U.S:location-GPE
.:O