With no explanation, label each line with "location-GPE", "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
During
this
appointment
he
visited
USA
and
Canada
,
with
the
Transport
Minister
Ernest
Marples
who
subsequently
introduced
parking
meters
in
London
.
During:O
this:O
appointment:O
he:O
visited:O
USA:location-GPE
and:O
Canada:location-GPE
,:O
with:O
the:O
Transport:O
Minister:O
Ernest:person-politician
Marples:person-politician
who:O
subsequently:O
introduced:O
parking:O
meters:O
in:O
London:location-GPE
.:O