With no explanation, label each line with "O", "location-bodiesofwater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
watershed
of
Lake
Baikal
has
numerous
floral
species
represented
.
The:O
watershed:O
of:O
Lake:location-bodiesofwater
Baikal:location-bodiesofwater
has:O
numerous:O
floral:O
species:O
represented:O
.:O