With no explanation, label each line with "location-GPE", "O", "event-sportsevent", "building-sportsfacility", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
On
3
October
2015
,
she
sang
the
Australian
national
anthem
before
AFL
Grand
Final
at
the
MCG
in
Melbourne
,
Australia
.
On:O
3:O
October:O
2015:O
,:O
she:O
sang:O
the:O
Australian:location-GPE
national:O
anthem:O
before:O
AFL:event-sportsevent
Grand:event-sportsevent
Final:event-sportsevent
at:O
the:O
MCG:building-sportsfacility
in:O
Melbourne:location-GPE
,:O
Australia:location-GPE
.:O