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 ":".
In
June
2007
the
airport
was
certified
as
Category
I
but
lost
it
in
August
2018
.
In:O
June:O
2007:O
the:O
airport:O
was:O
certified:O
as:O
Category:O
I:O
but:O
lost:O
it:O
in:O
August:O
2018:O
.:O