With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
Boaters
use
the
lake
for
recreational
boating
and
fishing
in
the
summer
.
Boaters:O
use:O
the:O
lake:O
for:O
recreational:O
boating:O
and:O
fishing:O
in:O
the:O
summer:O
.:O