With no explanation, label each line with "location-GPE", "O", "location-bodiesofwater", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
This
was
the
last
bridge
available
for
the
retreat
from
the
vital
Scheldt
Estuary
of
the
rapidly
collapsing
German
defences
near
Antwerp
in
World
War
II
.
This:O
was:O
the:O
last:O
bridge:O
available:O
for:O
the:O
retreat:O
from:O
the:O
vital:O
Scheldt:location-bodiesofwater
Estuary:location-bodiesofwater
of:O
the:O
rapidly:O
collapsing:O
German:location-GPE
defences:O
near:O
Antwerp:location-GPE
in:O
World:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
II:event-attack/battle/war/militaryconflict
.:O