With no explanation, label each line with "location-GPE", "O", "person-artist/author", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Grotius
was
appointed
ambassador
of
Christina
,
Queen
of
Sweden
to
France
in
1635
.
Grotius:person-other
was:O
appointed:O
ambassador:O
of:O
Christina:person-artist/author
,:O
Queen:O
of:O
Sweden:location-GPE
to:O
France:location-GPE
in:O
1635:O
.:O