With no explanation, label each line with "location-GPE", "O", "organization-education", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
in
philosophy
at
Colby
College
in
Waterville
,
Maine
.
in:O
philosophy:O
at:O
Colby:organization-education
College:organization-education
in:O
Waterville:location-GPE
,:O
Maine:location-GPE
.:O