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
the
present
tense
this
is
done
by
removing
the
b-
as
the
first
letter
of
the
verb
.
In:O
the:O
present:O
tense:O
this:O
is:O
done:O
by:O
removing:O
the:O
b-:O
as:O
the:O
first:O
letter:O
of:O
the:O
verb:O
.:O