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 ":".
A
large
number
of
designs
were
put
forward
,
ranging
from
a
huge
road
viaduct
with
two
500
foot
(
150
m
)
sluice
gates
crossing
the
Thames
at
Crayfordness
to
flap
gates
lying
on
the
river
bed
and
floated
up
by
compressed
air
.
A:O
large:O
number:O
of:O
designs:O
were:O
put:O
forward:O
,:O
ranging:O
from:O
a:O
huge:O
road:O
viaduct:O
with:O
two:O
500:O
foot:O
(:O
150:O
m:O
):O
sluice:O
gates:O
crossing:O
the:O
Thames:location-bodiesofwater
at:O
Crayfordness:location-GPE
to:O
flap:O
gates:O
lying:O
on:O
the:O
river:O
bed:O
and:O
floated:O
up:O
by:O
compressed:O
air:O
.:O