With no explanation, label each line with "location-GPE", "O", "organization-politicalparty", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
However
,
there
are
some
sources
that
suggests
that
Mao
Zedong
did
collude
with
the
invading
Japan
ese
forces
to
assist
them
in
effectively
attacking
KMT
forces
However:O
,:O
there:O
are:O
some:O
sources:O
that:O
suggests:O
that:O
Mao:person-politician
Zedong:person-politician
did:O
collude:O
with:O
the:O
invading:O
Japan:location-GPE
ese:O
forces:O
to:O
assist:O
them:O
in:O
effectively:O
attacking:O
KMT:organization-politicalparty
forces:O