With no explanation, label each line with "O", "location-bodiesofwater", "person-scholar", "location-GPE", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other" or "art-painting" preceded by ":".
Over
a
forty-year
career
,
Ernst
served
as
an
engineer
during
Sherman
's
Siege
of
Atlanta
during
the
American
Civil
War
,
commanded
U.S
.
troops
at
Coamo
during
the
Spanish–American
War
,
Cuba
and
sat
on
the
original
commission
for
the
Panama
Canal
after
retirement
from
active
service
.
Over:O
a:O
forty-year:O
career:O
,:O
Ernst:person-scholar
served:O
as:O
an:O
engineer:O
during:O
Sherman:event-attack/battle/war/militaryconflict
's:event-attack/battle/war/militaryconflict
Siege:event-attack/battle/war/militaryconflict
of:event-attack/battle/war/militaryconflict
Atlanta:event-attack/battle/war/militaryconflict
during:O
the:O
American:event-attack/battle/war/militaryconflict
Civil:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
,:O
commanded:O
U.S:location-GPE
.:O
troops:O
at:O
Coamo:location-GPE
during:O
the:O
Spanish–American:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
,:O
Cuba:location-GPE
and:O
sat:O
on:O
the:O
original:O
commission:O
for:O
the:O
Panama:location-bodiesofwater
Canal:location-bodiesofwater
after:O
retirement:O
from:O
active:O
service:O
.:O