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 ":".
In
1851
his
father
's
business
failed
and
he
had
to
leave
the
university
.
In:O
1851:O
his:O
father:O
's:O
business:O
failed:O
and:O
he:O
had:O
to:O
leave:O
the:O
university:O
.:O