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 ":".
It
was
the
first
named
storm
of
the
1973
Pacific
hurricane
season
.
It:O
was:O
the:O
first:O
named:O
storm:O
of:O
the:O
1973:O
Pacific:O
hurricane:O
season:O
.:O