With no explanation, label each line with "O", "person-politician", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
739
,
Pope
Gregory
III
begged
Charles
for
his
aid
against
Liutprand
,
but
Charles
was
loath
to
fight
his
onetime
ally
and
ignored
the
plea
.
In:O
739:O
,:O
Pope:O
Gregory:person-politician
III:person-politician
begged:O
Charles:person-other
for:O
his:O
aid:O
against:O
Liutprand:person-other
,:O
but:O
Charles:person-other
was:O
loath:O
to:O
fight:O
his:O
onetime:O
ally:O
and:O
ignored:O
the:O
plea:O
.:O