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 ":".
Glutathione
or
its
homologues
,
e.g
.
Glutathione:other-chemicalthing
or:O
its:O
homologues:O
,:O
e.g:O
.:O