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 ":".
Diquat
is
an
isomer
of
viologens
,
being
derived
from
2,2'-bipyridine
(
instead
of
the
4,4'-isomer
)
.
Diquat:other-chemicalthing
is:O
an:O
isomer:O
of:O
viologens:O
,:O
being:O
derived:O
from:O
2,2'-bipyridine:O
(:O
instead:O
of:O
the:O
4,4'-isomer:O
):O
.:O