With no explanation, label each line with "location-GPE", "O", "other-chemicalthing", "product-weapon", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
The
largest
nuclear
device
ever
tested
by
the
U.S
.
(
Castle
Bravo
)
yielded
because
of
an
unexpectedly
high
involvement
of
lithium-7
in
the
fusion
reaction
;
the
preliminary
prediction
for
the
yield
was
from
.
The:O
largest:O
nuclear:O
device:O
ever:O
tested:O
by:O
the:O
U.S:location-GPE
.:location-GPE
(:O
Castle:product-weapon
Bravo:product-weapon
):O
yielded:O
because:O
of:O
an:O
unexpectedly:O
high:O
involvement:O
of:O
lithium-7:other-chemicalthing
in:O
the:O
fusion:O
reaction:O
;:O
the:O
preliminary:O
prediction:O
for:O
the:O
yield:O
was:O
from:O
.:O