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 ":".
Current
molecules
have
shown
great
promise
and
are
undergoing
optimization
and
evaluation
in
order
to
obtain
a
patent
.
Current:O
molecules:O
have:O
shown:O
great:O
promise:O
and:O
are:O
undergoing:O
optimization:O
and:O
evaluation:O
in:O
order:O
to:O
obtain:O
a:O
patent:O
.:O