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
turned
to
the
northeast
with
the
front
,
weakened
to
a
tropical
depression
on
June
27
,
and
became
extratropical
on
June
28
.
It:O
turned:O
to:O
the:O
northeast:O
with:O
the:O
front:O
,:O
weakened:O
to:O
a:O
tropical:O
depression:O
on:O
June:O
27:O
,:O
and:O
became:O
extratropical:O
on:O
June:O
28:O
.:O