With no explanation, label each line with "O", "location-mountain", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
However
,
the
mine
edges
closer
to
Walmington
.
However:O
,:O
the:O
mine:O
edges:O
closer:O
to:O
Walmington:location-mountain
.:O