With no explanation, label each line with "O", "other-medical", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
There
has
been
suggested
that
4-MTA
because
of
its
slow
onset
of
action
,
is
more
dangerous
than
other
designer
drugs
.
There:O
has:O
been:O
suggested:O
that:O
4-MTA:other-medical
because:O
of:O
its:O
slow:O
onset:O
of:O
action:O
,:O
is:O
more:O
dangerous:O
than:O
other:O
designer:O
drugs:O
.:O