With no explanation, label each line with "O", "location-bodiesofwater", "location-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Some
of
the
tracks
were
submerged
by
Detroit
Lake
in
the
1950s
when
the
Detroit
Dam
was
completed
.
Some:O
of:O
the:O
tracks:O
were:O
submerged:O
by:O
Detroit:location-bodiesofwater
Lake:location-bodiesofwater
in:O
the:O
1950s:O
when:O
the:O
Detroit:location-other
Dam:location-other
was:O
completed:O
.:O