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 ":".
Her
parents
worked
in
a
factory
,
her
father
as
a
security
guard
.
Her:O
parents:O
worked:O
in:O
a:O
factory:O
,:O
her:O
father:O
as:O
a:O
security:O
guard:O
.:O