With no explanation, label each line with "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Many
of
the
opposition
groups
subsequently
began
competing
for
influence
in
the
power
vacuum
that
followed
the
ouster
of
Barre
's
regime
.
Many:O
of:O
the:O
opposition:O
groups:O
subsequently:O
began:O
competing:O
for:O
influence:O
in:O
the:O
power:O
vacuum:O
that:O
followed:O
the:O
ouster:O
of:O
Barre:person-politician
's:O
regime:O
.:O