With no explanation, label each line with "O", "other-chemicalthing", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
most
important
feature
is
detecting
a
history
of
cannabinoid
use
,
the
denial
of
which
can
delay
proper
diagnosis
.
The:O
most:O
important:O
feature:O
is:O
detecting:O
a:O
history:O
of:O
cannabinoid:other-chemicalthing
use:O
,:O
the:O
denial:O
of:O
which:O
can:O
delay:O
proper:O
diagnosis:O
.:O