With no explanation, label each line with "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
He
was
returned
as
head
of
the
AOT
,
later
that
year
.
He:O
was:O
returned:O
as:O
head:O
of:O
the:O
AOT:organization-other
,:O
later:O
that:O
year:O
.:O