With no explanation, label each line with "O", "location-island", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Lacking
a
native
population
,
ownership
of
the
Paracel
Islands
has
been
disputed
since
the
early
20th
century
.
Lacking:O
a:O
native:O
population:O
,:O
ownership:O
of:O
the:O
Paracel:location-island
Islands:location-island
has:O
been:O
disputed:O
since:O
the:O
early:O
20th:O
century:O
.:O