With no explanation, label each line with "O", "location-island", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
1272
,
he
was
party
to
the
nobles
who
offered
the
crown
to
Ottokar
II
of
Bohemia
and
then
Rudolph
of
Habsburg
.
In:O
1272:O
,:O
he:O
was:O
party:O
to:O
the:O
nobles:O
who:O
offered:O
the:O
crown:O
to:O
Ottokar:person-politician
II:person-politician
of:O
Bohemia:location-island
and:O
then:O
Rudolph:person-politician
of:O
Habsburg:location-island
.:O