With no explanation, label each line with "location-GPE", "O", "other-law", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Therefore
,
the
Adams-Onís
Treaty
did
not
apply
,
and
the
President
was
not
required
to
return
the
Africans
to
Africa
.
Therefore:O
,:O
the:O
Adams-Onís:other-law
Treaty:other-law
did:O
not:O
apply:O
,:O
and:O
the:O
President:O
was:O
not:O
required:O
to:O
return:O
the:O
Africans:O
to:O
Africa:location-GPE
.:O