With no explanation, label each line with "location-GPE", "O", "location-bodiesofwater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
During
2–4
May
,
the
fleet
conducted
another
demonstration
off
Horns
Reef
to
keep
German
attention
focused
on
the
North
Sea
.
During:O
2–4:O
May:O
,:O
the:O
fleet:O
conducted:O
another:O
demonstration:O
off:O
Horns:location-GPE
Reef:location-GPE
to:O
keep:O
German:location-GPE
attention:O
focused:O
on:O
the:O
North:location-bodiesofwater
Sea:location-bodiesofwater
.:O