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 ":".
His
father
was
an
auto
mechanic
and
a
machinist
.
His:O
father:O
was:O
an:O
auto:O
mechanic:O
and:O
a:O
machinist:O
.:O