With no explanation, label each line with "location-GPE", "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
As
such
,
Prince
Berthold
was
brother-in-law
to
Prince
Philip
,
Duke
of
Edinburgh
and
eventually
Elizabeth
II
.
As:O
such:O
,:O
Prince:person-politician
Berthold:person-politician
was:O
brother-in-law:O
to:O
Prince:person-politician
Philip:person-politician
,:O
Duke:person-politician
of:O
Edinburgh:location-GPE
and:O
eventually:O
Elizabeth:person-politician
II:person-politician
.:O