With no explanation, label each line with "location-GPE", "O", "product-software", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
Quarks
were
used
on
Dulkis
by
the
Dominators
to
enslave
and
terrorise
the
indigenous
Dulcian
population
to
ensure
the
drilling
of
bore
holes
through
the
planet
's
crust
.
The:O
Quarks:product-software
were:O
used:O
on:O
Dulkis:O
by:O
the:O
Dominators:O
to:O
enslave:O
and:O
terrorise:O
the:O
indigenous:O
Dulcian:location-GPE
population:O
to:O
ensure:O
the:O
drilling:O
of:O
bore:O
holes:O
through:O
the:O
planet:O
's:O
crust:O
.:O