With no explanation, label each line with "location-GPE", "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
He
escaped
slavery
in
the
1840s
to
New
England
and
returned
after
the
US
Civil
War
.
He:O
escaped:O
slavery:O
in:O
the:O
1840s:O
to:O
New:location-GPE
England:location-GPE
and:O
returned:O
after:O
the:O
US:event-attack/battle/war/militaryconflict
Civil:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
.:O