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 ":".
Tom
Palmer
was
briefly
the
main
director
of
the
studio
,
but
left
after
completing
only
two
films
.
Tom:person-director
Palmer:person-director
was:O
briefly:O
the:O
main:O
director:O
of:O
the:O
studio:O
,:O
but:O
left:O
after:O
completing:O
only:O
two:O
films:O
.:O