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 ":".
His
expedition
made
a
valuable
research
in
glaciology
,
geomagnetics
,
and
climatology
and
also
collected
data
about
natural
resources
and
native
population
of
that
remote
area
.
His:O
expedition:O
made:O
a:O
valuable:O
research:O
in:O
glaciology:O
,:O
geomagnetics:O
,:O
and:O
climatology:O
and:O
also:O
collected:O
data:O
about:O
natural:O
resources:O
and:O
native:O
population:O
of:O
that:O
remote:O
area:O
.:O