With no explanation, label each line with "location-GPE", "O", "person-politician", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
He
served
under
the
Slavic
``
Emir
''
of
Denia
,
Mujāhid
al-
‘
Āmirī
,
and
his
son
,
Ali
ibn
Mujahid
.
He:O
served:O
under:O
the:O
Slavic:O
``:O
Emir:O
'':O
of:O
Denia:location-GPE
,:O
Mujāhid:person-politician
al-:person-politician
‘:person-politician
Āmirī:person-politician
,:O
and:O
his:O
son:O
,:O
Ali:person-other
ibn:person-other
Mujahid:person-other
.:O