With no explanation, label each line with "O", "other-chemicalthing", "other-biologything", "other-medical", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
A
single
intramuscular
injection
of
20
to
30
mg
estradiol
undecylate
has
been
found
to
inhibit
ovulation
when
used
as
an
estrogen
-only
injectable
contraceptive
in
premenopausal
women
for
1
to
3
months
(
mean
1.7
months
)
as
well
.
A:O
single:O
intramuscular:O
injection:O
of:O
20:O
to:O
30:O
mg:O
estradiol:other-chemicalthing
undecylate:other-chemicalthing
has:O
been:O
found:O
to:O
inhibit:O
ovulation:O
when:O
used:O
as:O
an:O
estrogen:other-biologything
-only:O
injectable:other-medical
contraceptive:other-medical
in:O
premenopausal:O
women:O
for:O
1:O
to:O
3:O
months:O
(:O
mean:O
1.7:O
months:O
):O
as:O
well:O
.:O