With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
Aboriginal
people
had
a
good
understanding
of
local
ecologies
,
and
harvested
many
varieties
of
plants
and
animals
in
season
.
Aboriginal:O
people:O
had:O
a:O
good:O
understanding:O
of:O
local:O
ecologies:O
,:O
and:O
harvested:O
many:O
varieties:O
of:O
plants:O
and:O
animals:O
in:O
season:O
.:O