With no explanation, label each line with "O", "other-biologything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Presence
of
a
nitrile
moiety
on
the
pyrrolidine
ring
is
critical
to
achieving
potent
activity
Presence:O
of:O
a:O
nitrile:other-biologything
moiety:other-biologything
on:O
the:O
pyrrolidine:other-biologything
ring:other-biologything
is:O
critical:O
to:O
achieving:O
potent:O
activity:O