With no explanation, label each line with "O", "person-athlete", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Ironically
,
Hans
Ruesch
had
never
seen
an
Eskimo
.
Ironically:O
,:O
Hans:person-athlete
Ruesch:person-athlete
had:O
never:O
seen:O
an:O
Eskimo:organization-other
.:O