With no explanation, label each line with "location-GPE", "person-soldier", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
grave
of
K.
Leonidas
is
located
in
Tobruk
of
Libya
.
The:O
grave:O
of:O
K.:person-soldier
Leonidas:person-soldier
is:O
located:O
in:O
Tobruk:location-GPE
of:O
Libya:location-GPE
.:O