With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Unlike
their
North
Vietnamese
counterparts
,
South
Vietnam
possessed
a
large
naval
force
with
a
strong
fleet
of
ships
.
Unlike:O
their:O
North:location-GPE
Vietnamese:location-GPE
counterparts:O
,:O
South:location-GPE
Vietnam:location-GPE
possessed:O
a:O
large:O
naval:O
force:O
with:O
a:O
strong:O
fleet:O
of:O
ships:O
.:O