With no explanation, label each line with "location-GPE", "O", "building-sportsfacility", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
They
played
their
home
games
at
Lewis
Field
in
Stillwater
,
Oklahoma
.
They:O
played:O
their:O
home:O
games:O
at:O
Lewis:building-sportsfacility
Field:building-sportsfacility
in:O
Stillwater:location-GPE
,:O
Oklahoma:location-GPE
.:O