With no explanation, label each line with "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Ardashir
I
and
Ahuramazda
are
both
on
horseback
,
facing
each
other
.
Ardashir:person-politician
I:person-politician
and:O
Ahuramazda:person-politician
are:O
both:O
on:O
horseback:O
,:O
facing:O
each:O
other:O
.:O