With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Robert
,
Rawy
,
Edward
,
and
Jonathan
held
a
press
conference
and
announced
they
were
quitting
the
group
,
only
Adrián
remained
in
the
group
.
Robert:person-other
,:O
Rawy:person-other
,:O
Edward:person-other
,:O
and:O
Jonathan:person-other
held:O
a:O
press:O
conference:O
and:O
announced:O
they:O
were:O
quitting:O
the:O
group:O
,:O
only:O
Adrián:person-other
remained:O
in:O
the:O
group:O
.:O