With no explanation, label each line with "location-GPE", "O", "event-sportsevent", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
At
the
2008
Summer
Olympics
,
she
became
the
first
U.S
.
female
athlete
in
modern
Olympic
history
to
win
six
medals
in
one
Olympiad
,
and
the
first
woman
ever
to
win
a
100-meter
backstroke
gold
in
two
consecutive
Olympics
.
At:O
the:O
2008:event-sportsevent
Summer:event-sportsevent
Olympics:event-sportsevent
,:O
she:O
became:O
the:O
first:O
U.S:location-GPE
.:location-GPE
female:O
athlete:O
in:O
modern:O
Olympic:event-sportsevent
history:O
to:O
win:O
six:O
medals:O
in:O
one:O
Olympiad:O
,:O
and:O
the:O
first:O
woman:O
ever:O
to:O
win:O
a:O
100-meter:O
backstroke:O
gold:O
in:O
two:O
consecutive:O
Olympics:event-sportsevent
.:O