With no explanation, label each line with "location-GPE", "art-writtenart", "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "building-airport" preceded by ":".
A
vocal
nationalist
and
republican
,
Lawson
regularly
contributed
to
``
The
Bulletin
``
,
and
many
of
his
works
helped
popularise
the
Australian
vernacular
in
fiction
.
A:O
vocal:O
nationalist:O
and:O
republican:O
,:O
Lawson:person-other
regularly:O
contributed:O
to:O
``:O
The:art-writtenart
Bulletin:art-writtenart
``:O
,:O
and:O
many:O
of:O
his:O
works:O
helped:O
popularise:O
the:O
Australian:location-GPE
vernacular:O
in:O
fiction:O
.:O