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 ":".
Some
iatrogenic
events
are
obvious
,
like
amputation
of
the
wrong
limb
,
whereas
others
,
like
drug
interactions
,
can
evade
recognition
.
Some:O
iatrogenic:O
events:O
are:O
obvious:O
,:O
like:O
amputation:O
of:O
the:O
wrong:O
limb:O
,:O
whereas:O
others:O
,:O
like:O
drug:O
interactions:O
,:O
can:O
evade:O
recognition:O
.:O