With no explanation, label each line with "location-GPE", "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Epaminondas
began
serving
as
a
soldier
after
adolescence
;
Plutarch
refers
to
an
incident
involving
Epaminondas
that
occurred
during
a
battle
at
Mantinea
.
Epaminondas:person-other
began:O
serving:O
as:O
a:O
soldier:O
after:O
adolescence:O
;:O
Plutarch:person-other
refers:O
to:O
an:O
incident:O
involving:O
Epaminondas:person-other
that:O
occurred:O
during:O
a:O
battle:O
at:O
Mantinea:location-GPE
.:O