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
divorced
when
she
was
six
years
old
.
Her:O
parents:O
divorced:O
when:O
she:O
was:O
six:O
years:O
old:O
.:O