With no explanation, label each line with "location-GPE", "O", "event-protest", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
He
participated
in
the
mass
Vietnam
Moratorium
protests
in
his
Melbourne
in
1970
.
He:O
participated:O
in:O
the:O
mass:O
Vietnam:event-protest
Moratorium:event-protest
protests:O
in:O
his:O
Melbourne:location-GPE
in:O
1970:O
.:O