With no explanation, label each line with "location-GPE", "O", "other-god", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Asteroids
in
the
leading
(
)
orbit
are
named
after
Greek
heroes
(
the
``
Greek
node
or
camp
''
or
``
Achilles
group
''
)
,
and
those
at
the
trailing
(
)
orbit
are
named
after
the
heroes
of
Troy
(
the
``
Trojan
node
or
camp
''
)
.
Asteroids:O
in:O
the:O
leading:O
(:O
):O
orbit:O
are:O
named:O
after:O
Greek:location-GPE
heroes:O
(:O
the:O
``:O
Greek:location-GPE
node:O
or:O
camp:O
'':O
or:O
``:O
Achilles:other-god
group:O
'':O
):O
,:O
and:O
those:O
at:O
the:O
trailing:O
(:O
):O
orbit:O
are:O
named:O
after:O
the:O
heroes:O
of:O
Troy:location-GPE
(:O
the:O
``:O
Trojan:other-god
node:O
or:O
camp:O
'':O
):O
.:O