With no explanation, label each line with "O", "person-scholar", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
A
substantial
part
of
the
language
has
been
analysed
and
recorded
by
Robert
M.
W.
Dixon
.
A:O
substantial:O
part:O
of:O
the:O
language:O
has:O
been:O
analysed:O
and:O
recorded:O
by:O
Robert:person-scholar
M.:person-scholar
W.:person-scholar
Dixon:person-scholar
.:O