With no explanation, label each line with "O", "person-director", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
the
middle
of
the
1970s
,
Yevgeny
Matveyev
stepped
in
as
a
director
again
.
In:O
the:O
middle:O
of:O
the:O
1970s:O
,:O
Yevgeny:person-director
Matveyev:person-director
stepped:O
in:O
as:O
a:O
director:O
again:O
.:O