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 ":".
In
contrast
to
stigmatellin
,
myxothiazol
does
not
form
a
hydrogen
bond
to
the
Rieske
iron-sulfur
protein
,
binding
instead
in
the
'
b-proximal
'
region
of
the
cytochrome
b
Qo
site
.
In:O
contrast:O
to:O
stigmatellin:other-chemicalthing
,:O
myxothiazol:other-chemicalthing
does:O
not:O
form:O
a:O
hydrogen:O
bond:O
to:O
the:other-chemicalthing
Rieske:other-chemicalthing
iron-sulfur:other-chemicalthing
protein:other-chemicalthing
,:O
binding:O
instead:O
in:O
the:O
':O
b-proximal:O
':O
region:O
of:O
the:O
cytochrome:O
b:O
Qo:O
site:O
.:O