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 ":".
In
1850
,
he
traveled
to
Düsseldorf
,
where
he
made
rapid
progress
.
In:O
1850:O
,:O
he:O
traveled:O
to:O
Düsseldorf:location-GPE
,:O
where:O
he:O
made:O
rapid:O
progress:O
.:O